catalogue - nippon steel

Hot-dip Galvanized Steel SheetDURGRIP®

Chromate-free Hot-dip Galvanized Steel SheetDURGRIP®21



Cat. No. JC334 2010.8 PDF

Printed in Japan© NIPPON STEEL CORPORATION 2007 All Rights Reserved.

Hot-dip Galvanized Steel Sheet DURGRIP® Chromate-free Hot-dip Galvanized Steel Sheet DURGRIP®21

Marunouchi Park Building,2-6-1, Marunouchi, Chiyoda-ku, Tokyo, 100-8071, JapanPhone: 81-3-6867-4111 Fax: 81-3-6867-5607

Head Office Nippon Steel Corporation

1

Hot-dip galvanized steel sheets are a familiar product that is deep-ly ingrained in our daily lives. It has a long history of application that covers a wide range of fields—building construction, civil engi-neering, electric appliances, automobiles and household articles.

Nippon Steel’s hot-dip galvanized steel sheet, DURGRIP®, which is supported by many years of accumulated expertise and advanced production technologies, has gained a high reputation in these fields of application.

In addition to JIS and ASTM products, Nippon Steel offers a lineup of its own proprietary standards and coating types designed to meet the most demanding user requirements.

The application of environmentally friendly materials in the making of finished products is a growing means by which to raise commodity values. Furthermore, the trend of reducing or prohibit-ing the use of chemical substances and other materials to mitigate environmental stress is becoming stricter day by day.

Given these circumstances, Nippon Steel manufactures and markets DURGRIP®21, chromate-free coated steel sheets that are completely free of chromate but excel in corrosion resistance and formability.

This catalog outlines both DURGRIP® (hot-dip galvanized steel sheets) and DURGRIP®21 (chromate-free hot-dip galvan-ized steel sheets). Please use this catalog to select the hot-dip gal-vanized steel sheet most suitable for the intended application and to ensure quality finished product manufacturing.

Notice: While every effort has been made to ensure the accuracy of the information contained within this publication, the use of the information is at the reader’s risk and no warranty is implied or expressed by Nippon Steel Corporation with respect to the use of information contained herein.The information in this publication is subject to change or modification without notice. Please contact the Nippon Steel office for the latest information.



Contents

Introduction ………………………………………………………………… 1

Features ……………………………………………………………………… 2

Production Process ………………………………………………………… 3

Examples of the Representative Properties of Surface Treatments ……… 4

Standards …………………………………………………………………… 9

Available Sizes …………………………………………………………… 20

Characteristic Properties ………………………………………………… 24

Packaging and Marking ………………………………………………… 26

Precautions in Use ………………………………………………………… 27

Guide to Ordering ………………………………………………………… 29

Applications ……………………………………………………………… 30

Reference Data JIS G 3302-2007 (Excerpt) …………………………… 32

Reference Data ASTM A 653/A 653M-96 (Excerpt) …………………… 37

References ………………………………………………………………… 41

Introduction

Copyright © 2007 NIPPON STEEL CORPORATION. All rights reserved.

Hot-dip Galvanized Steel Sheet DURGRIP® Chromate-free Hot-dip Galvanized Steel Sheet DURGRIP®21 (JC334)

32

Galvanizing Process

Hot-dip Galvanizing Line

Hot-rolled or cold-rolled coils

ShearWelder

Heat-treatment furnace

Cooling tower

Skin-pass mill

Leveler

Chemical-treatmentequipment

Galvanizing bath

Spangle adjustment

Gas wiping

Cut-length sheets

Coils

Looper

Looper

Shear

Special coating film

Hot-dip galvanizing

Base metal

Chromate-freeHot-dip Galvanized Sheet

(DURGRIP21)

11 33

22

11 22

＊DURGRIP21 is manufactured using a special coating on hot-dip galvanized steel sheets (DURGRIP).

Excellent Adherence of Zinc Coating Meets Severe

Fabrication Conditions Production by continuous hot-dip galvanizing lines ensures that the alloying layer is thin and that zinc coating adherence is extremely high.

Products that accurately meet application and fabrication conditions are available from a rich line-up of standards and specifications.

Beautiful Appearance

Zero-spangle products in addition to regular-spangled products having the fine luster peculiar to zinc can be supplied.

High CorrosionResistance

DURGRIP assures long-term protection of the base metal (high red rust resistance).

Because of a special surface treat-ment added to the zinc coating, DURGRIP offers high corrosion resistance (white rust resistance).


Chromate-free Hot-dip Galvanized Steel SheetDURGRIP®21＊

High Corrosion Resistance and Tribological Properties

QM Type Due to the effect of its special coating film, DUR-GRIP21 offers corrosion resistance and formability simi-lar to conventional chromate-treated galvanized sheets.

Because the formability of the special coating film is similar to that of chromate, the molds are easily adjusted.

QFK Type Due to the effect of the special coating film, DURGRIP21 offers not only higher corrosion resistance but also a lower dyna-mic friction coefficient and higher tribologi-cal properties compared to conventional chromate-treated galvanized sheets.

CompletelyChromate-free

DURGRIP21 is manufactured by pro-viding a special coating film that contains no chromate.

Features

DURGRIP®21 equals to SILVERZINC21 for Japanese use.

Production Process

1. Base Metal Hot-rolled or cold-rolled coils that conform to specified standards are used as the base metal for galvanizing. In the case of cold-rolled coils, for example, coils with speci-fied properties that conform to various standards — such as commercial quality, drawing quality, high strength, and other special qualities — are used as the base metal.

2. Annealing

In the annealing furnace, coils used for the base metal are subjected to surface treatments such as the cleansing of rolling oil and other deposits and the removal of oxides. Then, after being fully reheated, the coils undergo material property adjustments such as recrystallization.

3. Hot-dip Galvanizing Steel sheets having cleaned surfaces are immersed in a molten zinc bath to provide hot-dip galvanizing. The mass of the coating is adjusted by means of gas wiping just after galvanizing.

4. Surface Treatment

The chromate treatment or chromate-free treatment is applied to the galvanized steel sheets in a chemical treat-ment equipment to protect the galvanized surface.



54

1. Outline of Properties

Product

DURGRIP21

DURGRIP

Kind oftreatment

Chromate-free treatment

(Efficient welding-stressing type)

Chromate-free treatment

(Corrosion resistance- and lubricity-stressing

type)

Chromic acidtreatment

Special chromate treatment

Corrosion-resistant chromate

treatment

No treatment

Features

Good balance between various properties and recommended for gen-eral applications

Excellent particularly in press formability and corrosion resistance

—

Excellent in corrosion resistance over C treat-ment and offers gener-al applicability

Excellent in corrosion resistance

※No surface treatment film (requiring surface treatments such as phosphate treatment)

Applications

Washing machines,air conditioners,

automatic vending machines,

electric home appliance,automotive parts

Washing machines,air conditioners

—

General uses

Non-painting use and special specification use

Painting use

Surface treatment

designation

QM

QFK

C

Y

E

M

◯

◎

△

◯

◎

※

◯

◎

◎

◯

—

※

◯

△

◎

◯

◯

◎

◯

◯

◯

◯

◯

◯

Structure and Function of Coating Films

q Shutting out of corrosion factors

w Self-restorative function

e Coatingadhesiveness

Chromatecoating film

Coating film

Zinccoating layer

Steel sheet

Corrosion Resistance Mechanism of Chromate free Coating FilmChromate-free film uses substances selected because they provide the characteristic features of chromate film such as its barrier effect, self-restorative function and paint adhesiveness. Chromate-free coated sheet has been realized by use of this special coating film.

When this film is injured, soluble hexavalent chromium leaches out to offer a “self-restorative function” that repairs the film.

e Coatingadhesiveness

Coating film

Processed/injured section

Special coating film(containing corrosion-

suppression agent)

Zinc coating layer

Steel sheet

w Corrosion-suppressionfunction

Corrosion factorH2O O2

Function of Chromate Coating Film ● Barrier effect● Self restoration function

Chromate Coating Film

Salt Spray Test (JIS Z2371)

3. Corrosion Resistance

Chromate-free Coating Film

Example of Salt Spray Test (Flat sheet) Examples of Appearance After Salt Spray Test for 120 Hours

0

10

20

30

40

50

0 15010050 200 250

Cor

rosi

on o

ccur

renc

e ar

ea r

ate

(%)

Test time (hrs)

Corrosion-resistant chromate treatment (E)Chromic acid treatment (C)

DURGRIP21 (QM) DURGRIP21 (QFK)

Surface Treatment

2. Corrosion-resistant Mechanism of Conventional Chromate-treated Film and Chromate-free Film

QM (Efficient welding-stressing type)C (Conventional product; chromic acid treatment)E (Conventional product; corrosion-resistant

chromate treatment)QFK (Corrosion resistance- and

lubricity-stressing type)

References:*1）Comparison with special chromate treatment◎: Higher ○: Similar △: Slightly lower

*2） Appropriate welding current range differs according to the treatment applied,so please consult us.

【Assessment method】Corrosion resistance: Salt spray test (5%); time up to the white rust occurrence (conforming to JIS Z2371)

Tribological property: Heidon dynamic friction coefficient measurement method (steel ball 10 mm in dia; load 1.0 N; moving speed 150 mm/min)

Conductivity: Loresta MP type; assessment of conducting rate of less than 1 mΩ (contact 2 mm in dia×4; load 1.5 N)

Weldability: Spot weldability

Paintability: Melamine alkyd-type resin coating; 1 mm cross-cut tape peeling-off assessment

Chromate-free treatment denotes chemical treatment without the use of hexavalent chromium. Meanwhile, QM and QFK treatments use neither trivalent nor hexavalent chromium.

Effects similar to those offered by special coating film containing corrosion-suppression agent

q Shutting out ofcorrosion factors

Examples of the Representative Properties of Surface Treatments

Weld-ability

Paint-ability

＊1）＊2）＊1）

Conduc-tivity

＊1）

Corrosionresistance

＊1）



Teo Pei San

Rectangle

Teo Pei San

Right Hand Sign - Yellow

Teo Pei San


76

5. Lubricity

Dynamic Friction Coefficient

Conceptual Drawing of Dynamic Friction Coefficient Measurement Device

6. Lubricity (Pulling-out Test)

Tribological Resistance

Flat-surface Pulling-in Device

Examples of Dynamic Friction Coefficient Measurement Tests

Salt Spray Test (JIS Z2371)

4. Corrosion Resistance (Fabricated part)

Example of Salt Spray Test (Erichsen fabricated part)

0

20

40

60

80

100

10

30

50

70

90

0 15010050 200 250

Cor

rosi

on o

ccur

renc

e ar

ea r

ate

(%)

Test time (hrs)

DURGRIP21 (QM) DURGRIP21 (QFK)

QM (Efficient welding-stressing type)C (Conventional product; chromic acid treatment)E (Conventional product; corrosion-resistant chromate treatment)QFK (Corrosion resistance- and lubricity-stressing type)

Tribological contact: 10 mmφ SUS ballMoving speed: 150 mm/minLoad: 1.0 NOiling: No oiling, rust-prevention oiling

Load: 1.0 N

150 mm/minTest piece

Load cell

Dynamic friction coefficient0 0.2 0.4 0.6

Example of Friction Coefficient at the Time of Pulling-out of Flat Sheet

Dyn

amic

fric

tion

coef

ficie

nt

0

0.1

0.2

0.3Pressurized load: 1.0 tonPulling-out speed: 200 mm/minPulling-out distance: 100 mmOiling: Rust-prevention oilingAssessment: Friction coefficient*

*Friction coefficient=(Pulling-out load/Pressurized load)/2

7. Conductivity (Surface Insulation Resistance)

Surface Insulation Resistance Test (JIS C2550)

Conceptual Drawing of Surface Insulation Resistance Measurement Device

8. Conductivity (Earth Property)

Loresta (4 Prove Type)

Conceptual Drawing of Contact Resistance Measurement Device (Loresta 4 Prove Type)

Test device: Dia Instruments Co., Ltd. Loresta MP TypeTest current: 1 μA～100 mAMeasured resistance range: 106～10-2 ΩSurface area of contacts: 2 mmφ×4 contacts Distance between electrodes 5 mmContact load: 1.5 N/contactAssessment: Conducting rate (%)=Conducting times*/20 times×100

*Conducting=Les than 1 mΩΩ

Pressurizedload

Oiling No oiling

Example of Surface Insulation Resistance Test

Surface Insulation Resistance (Ω・cm2)

0 102 64 8

5 Ω 5 Ω 5 Ω A

V

Contact

Coating filmDrill

BatteryAbout 30 Ω

About 1 Ω

Steel sheet (base metal)

Con

duc

ting

rate

(%) →

Goo

d

0

10

20

30

40

50

60

70

80

90

100

Example of Contact Resistance Test (Loresta 4 Prove Type)

Constant current source

V

i

Test piece

Example of Appearance After Salt Spray Test for 72 Hours (Erichsen fabricated part)

Flat surface (extra-hard)30×25 mm

Flat surface (extra-hard)30×25 mm

Test voltage: 0.5 VMeasurement current range: 0～1 AContact surface area: 1 cm2×10 contactsStandard test pressure: 2 N/mm2±5%

RS=A（1/i –1） RS: Surface insulation resistance value (Ω･cm2/sheet)A: Total area of contacts=10 (cm2) i: Average current (Ａ)

QM(Efficient welding-

stressing type)

QFK(Corrosion resistance- and


C(Conventional product; chromic acid treatment)

E(Conventional product; corrosion-

resistant chromate treatment)

QM(Efficient welding-

stressing type)

E(Conventional product;

corrosion-resistant chromate treatment)

C(Conventional pro-duct; chromic acid

treatment)

QM(Efficient welding-stressing type)

QFK(Corrosion resistance- and lubricity-stressing

type)



C(Conventional product; chromic acid treatment)

E(Conventional product; corrosion-

resistant chromate treatment)

Examples of the Representative Properties of Surface Treatments

E(Conventional product;

corrosion-resistant chromate treatment)

C(Conventional pro-duct; chromic acid

treatment)

QM(Efficient welding-stressing type)

QFK(Corrosion resistance- and lubricity-stressing

type)



98

9. Paintability

Paint Adhesion

10. Fingerprint Resistance

Fingerprint Resistance

Testing Conditions

11. Spot Weldability

Appropriate Welding Current Range

Thickness of steel sheet: 0.8 mmCoating mass: Electrogalvanizing Z18Electrode: CF type (4.5 mm in tip diameter, 1%Cr-Cu alloy)Electrode pressure: 2,000 NWelding time: 10 cycles (at 50 Hz)Electrode holding time: 10 cycles (at 50 Hz)

Paintability differs according to the paint type and painting method. Accordingly prior confirmation is definitely requested to confirm the suitability of the paint to be applied.

Further, because coating substrate treatment, such as those using zinc phosphate, can cause melting of the coating film, it is recommended that their use be avoided. (When providing a phosphate treatment, please use untreated galvanized steel sheets.)

*Prime: Assessment after top painting

Cross cut test: After providing cross cuts at an interval of 1 mm, peel off using cellophane tapeErichsen test: After pushing out by 7 mm, peel off using cellophane tape

◎No change　○Slightly peeled off　△Considerably peeled off　×Entirely peeled off

Baking condition

120°C×20 minutes

Painting Conditions

Paint Adhesion

Paint

Surface treatment

Test method

Judgment

Melamine alkyd

Cross cut test

Erichsen test

Prime*

QM

◎

○

QFK

◎

◎

E (corrosion-resistant chromate treatment)◎

○

C (chromic acid treatment)

◎

○

Kind of paint

Melamine alkyd type

Paint thickness

20μm

Organoleptic assessment by visual checkingof actual fingerprint marks

QM

Marks

QFK

No marksFingerprint resistance

Test method

Expulsion WeldingFormationof nugget

≦4√t

Welding current (kA)5 6 7 8 9

Fingerprint Resistance

Appropriate Welding Current Range for DURGRIP21

E(corrosion-resistant chromate treatment)

Marks

C(chromic acid

treatment)

Marks

QM(Efficient welding-stressing

type)



C(Conventional product; chro-

mic acid treatment)E

(Conventional product; corrosion-resistant chromate treatment)

Assessment by visual checking of the change in appearance after attaching finger-prints by means of actual fingers on steel sheet surface

Type (JIS)

Base Metal (Cold-rolled Coils)

Type

Commercial

Grade 1

Drawing Grade 2

Grade 3

Grade 4 (non-aging property)

340N-class

400N-class

Structural 440N-class

490N-class

570N-class

Commercial, hard

Designation

SGCC

SGCD1

SGCD2

SGCD3

SGCD4

SGC340

SGC400

SGC440

SGC490

SGC570

SGCH

Nominal thickness （mm）

0.25≦t≦3.2

0.40≦t≦2.3

0.40≦t≦2.3

0.60≦t≦2.3

0.60≦t≦2.3

0.25≦t≦3.2

0.25≦t≦3.2

0.25≦t≦3.2

0.25≦t≦3.2

0.25≦t≦2.0

0.11≦t≦1.0

Z06～Z27

◯

◯

◯

◯

◯

◯

◯

◯

◯

◯

◯

Z35, Z37

◯

—

—

—

—

◯

◯

◯

◯

◯

◯

Z45

◯

—

—

—

—

◯

◯

◯

◯

◯

◯

Z60

◯

—

—

—

—

◯

◯

◯

◯

◯

◯

Kind of coating

Base Metal (Hot-rolled Coils)

Type

Commercial

340N-class

400N-class


490N-class

540N-class

Designation

SGHC

SGH340

SGH400

SGH440

SGH490

SGH540

Nominal thickness（mm）

1.6≦t≦6.0

1.6≦t≦6.0

1.6≦t≦6.0

1.6≦t≦6.0

1.6≦t≦6.0

1.6≦t≦6.0

Z06～Z37

◯

◯

◯

◯

◯

◯

Z45

◯

◯

◯

◯

◯

◯

Z60

◯

◯

◯

◯

◯

◯

Kind of coating

Table-b


0.11≦t＜0.16

0.16≦t＜0.27

0.27≦t≦0.30

0.30≦t≦0.50

0.50＜t≦1.0

References

Special-purpose use

—

Special-purpose use

—

—

Coating mass designation

Z12

Z18, Z22, Z25, Z27

Z22, Z25, Z27

Table-a


0.35≦t≦1.0

1.0＜t

0.27≦t≦0.50

0.50＜t≦1.0

1.0＜t

Application

Roofing

Outer structural panel


Z25, Z27

Z27

Z18, Z22, Z25, Z27

Z22, Z25, Z27

Z27

Notes: 1 Nominal thicknesses other than those listed in the above table may be agreed upon between the producer and purchaser.2 In the case of the use for roofing and outer structural panels, the designation in the above table shall be suffixed with R for the use for roofing and A for the use for

outer structural panels. In this case, the nominal thickness and coating mass in the Table-a shall be applied. Meanwhile, Z35, Z37, Z45 and Z60 may be agreed upon between the producer and purchaser.

3 In the case of corrugated products fabricated according to JIS G 3316, the designation in the above table shall further be suffixed with W and the corrugated shape symbol. In this case, the nominal thickness and coating mass in the Table-b shall be applied. Meanwhile, Z35, Z37, Z45 and Z60 may be agreed upon between the producer and purchaser.

4 Of the types in the above table, the commercial grade is used for corrugated products.5 For SGC570 and SGCH, please consult us in advance.

Note: For thicknesses from 1.6 mm to 3.2 mm inclusive, there are cases when cold-rolled base metal satisfying the specifications of hot-rolled base metal is used, unless specifically directed to use hot-rolled base metal.

StandardsExamples of the Representative Properties of Surface Treatments



Teo Pei San


Teo Pei San

Rectangle

1110


Type

Commercial

Grade 1

Grade 2

Drawing Grade 3

Grade 4

Grade 5

340N-class

400N-class


490N-class

500N-class

570N-class

Commercial, hard

340N-class

Drawing, high strength 370N-class

390N-class

440N-class

Drawing, high strength, bake-hardening type 340N-class

Designation

NSGCC

NSGCD1

NSGCD2

NSGCD3

NSGCD4

NSGCD5

NSGC340

NSGC400

NSGC440

NSGC490

NSGC500

NSGC570

NSGCH

NSGR340

NSGR370

NSGR390

NSGR440

NSGR340B


0.25≦t≦3.2

0.40≦t≦2.3

0.40≦t≦2.3

0.60≦t≦2.3

0.60≦t≦2.3

0.60≦t≦2.3

0.25≦t≦3.2

0.25≦t≦3.2

0.25≦t≦3.2

0.25≦t≦3.2

0.25≦t≦3.2

0.25≦t≦2.0

0.11≦t≦1.0

0.40≦t≦3.2

0.40≦t≦3.2

0.40≦t≦3.2

0.40≦t≦3.2

0.40≦t≦3.2


Z43, Z50＊

Z35, Z37, Z43, Z45, Z50 and Z60 may be agreed upon between the pro-ducer and purchaser.＊

Z43, Z50＊

Z43, Z50＊

Z43, Z50＊

Z43, Z50＊

＊＊

Z43, Z50＊

Z43, Z50＊

Z12, Z18, Z20Z22, Z25, Z27

Type (Nippon Steel Standards) Type (Nippon Steel Standards)Designation of both sides Designation of one side


Type

Commercial

340N-class

400N-class


490N-class

500N-class

Designation

NSGHC

NSGH340

NSGH400

NSGH440

NSGH490

NSGH500


1.6≦t≦9.0

1.6≦t≦9.0

1.6≦t≦9.0

1.6≦t≦6.0

1.6≦t≦6.0

1.6≦t≦6.0


Z43, Z50, Z90, Z110

Z43, Z50, Z90, Z110

Z43, Z50, Z90, Z110

Z43, Z50, Z90, Z110

Z43, Z50, Z90, Z110

＊

Table-a


0.35≦t

0.27≦t≦1.0

1.0＜t

Application

Roofing

Outer structural panel


Specifications of Z43 and Z50 may be agreed upon.


Specifications of Z22, Z43 and Z50 may be agreed upon.

Table-b


0.11≦t＜0.16

0.16≦t≦1.0

References

For exports

—



＊ Of the above, Z12, Z14, Z18, Z20, Z22, Z25, Z27, Z35, Z37, Z43, Z45, Z50, Z60, Z90 and Z110 can be specified.

Standards

Notes: 1 In the case of specifying non-aging property for NSGCD3, NSGCD4 and NSGCD5 cut-length sheets and coils: NSGCD3N, NSGCD4N and NSGCD5N2 Nominal thicknesses other than those listed in the above table may be agreed upon between the producer and purchaser.3 In the case of the use for roofing and outer structural panels, the designation in the above table shall be suffixed with R for the use for roofing and A for the use for out-

er structural panels. In this case, the nominal thickness and coating mass in the Table-a shall be applied.4 In the case of corrugated products fabricated according to JIS G 3316, the designation in the above table shall further be suffixed with W and the corrugated shape

symbol. In this case, the nominal thickness and coating mass in the Table-b shall be applied.5 Of the types in the above table, the commercial grade is used for corrugated products.6 In the case of specifying the types in the above table, coating mass designations Z12~Z60 shall be applied.7 For NSGC570 and NSGCH, please consult us in advance.＊ Of the above, Z22 can be specified for use for outer structural panels.＊＊ Of the above, Z12, Z14, Z18, Z20, Z22, Z25, Z27, Z35, Z37, Z43, Z45, Z50 and Z60 can be specified.


Type

Commercial

Grade 1

Grade 2

Drawing Grade 3

Grade 4

Grade 5

340N-class

400N-class


490N-class

500N-class

570N-class

340N-class

Drawing, high strength 370N-class

390N-class

440N-class

Bake-hardening type, drawing, high strength 340N-class

340N-class

Deep drawing, high strength 370N-class

390N-class

440N-class

Code

LGD

LGP1

LGP2

LGP3

LGP4

LGP5

LG340

LG400

LG440

LG490

LG500

LG570

LG340R

LG370R

LG390R

LG440R

LG340RB

LG340E

LG370E

LG390E

LG440E


045, 060, 090, 120


Type

Commercial

DrawingGrade 1

Grade 2

340N-class

400N-class

General structural 440N-class

490N-class

500N-class

310N-class

Automotive structural370N-class

400N-class

440N-class

Designation

LGHD

LGHP1

LGHP2

LGH340

LGH400

LGH440

LGH490

LGH500

LGSAPH310

LGSAPH370

LGSAPH400

LGSAPH440


045, 060, 090, 120

Notes: 1 In the case of specifying non-aging property for LGP3, LGP 4 and LGP 5 cut-length sheets and coils: LGP3N, LGP4N, LGP5N2 For LG570, please consult us in advance.



1312

Designation

QM

QFK

C

Y

E

M

Kind of treatment

Chromate-free (Efficient welding-stressing type)

Chromate-free (Corrosion resistance- and lubricity-stressing type)

Chromic acid treatment

Special chromate

Corrosion-resistant chromate

No treatment

Surface Treatments

(unit: g/m2)

Kind of coating

Equal coatingon both sides（designation of both sides）

Equal coatingon both sides（designation of one side）

Coating mass （designation）

（Z06）

Z08

Z10

Z12

Z14

Z18

Z20

Z22

Z25

Z27

Z35

Z37

Z43

Z45

Z50

Z60

Z90

Z110

（045）

060

090

120

Minimum coating mass

One side（triple-spot method）

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

450

550

—

—

—

—

Both sides（one-spot method）

51

68

85

102

119

153

170

187

213

234

298

315

366

383

425

510

765

935

—

—

—

—

Both sides（triple-spot method）

60

80

100

120

140

180

200

220

250

275

350

370

430

450

500

600

—

—

—

—

—

—

Reverse side（triple-spot method）

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

30

40

60

90

Obverse side（triple-spot method）

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

30

40

60

90

Note: Regarding the coating mass designation with parenthesis, please consult us in advance.

Coating Mass (JIS and Nippon Steel Standards)

Standards

1,600≦W

—

—

±0.08

±0.08

±0.10

±0.12

±0.14

±0.16

±0.18

±0.21

—

1,250≦W＜1,600

—

±0.06

±0.07

±0.07

±0.09

±0.10

±0.12

±0.14

±0.16

±0.18

±0.21

Width

1,000≦W＜1,250

±0.04

±0.05

±0.06

±0.07

±0.08

±0.09

±0.11

±0.13

±0.15

±0.17

±0.20

630≦W＜1,000

±0.04

±0.05

±0.06

±0.07

±0.07

±0.08

±0.10

±0.12

±0.14

±0.16

±0.18

W＜630

±0.04

±0.05

±0.06

±0.07

±0.07

±0.08

±0.09

±0.11

±0.13

±0.15

±0.17

Nominal thickness

t＜0.25

0.25≦t＜0.40

0.40≦t＜0.60

0.60≦t＜0.80

0.80≦t＜1.00

1.00≦t＜1.25

1.25≦t＜1.60

1.60≦t＜2.00

2.00≦t＜2.50

2.50≦t＜3.15

3.15≦t

Size Tolerances (JIS and Nippon Steel Standards)

Base Metal (Cold-rolled Coils) (unit: mm)

1. Thickness Tolerances Thickness tolerances are applied to the total values of nominal plate thickness and corresponding coating thickness.

Designation

R

Z

Kind of spangle

Regular spangle

Zero spangle （minimized spangle）

Surface Finishes (JIS and Nippon Steel Standards)

Note: Thickness shall be measured at the optional spot 25 mm or more inside from the edge.

1,800≦W＜2,300

±0.22＊

±0.26＊

±0.27

±0.28

—

—

—

Width

1,500≦W＜1,800

±0.19

±0.22

±0.25

±0.27

—

—

—

1,200≦W＜1,500

±0.18

±0.20

±0.22

±0.24

±0.27

±0.29

±0.31

W＜1,200

±0.17

±0.18

±0.20

±0.22

±0.25

±0.27

±0.30

Nominalthickness

1.60≦t＜2.00

2.00≦t＜2.50

2.50≦t＜3.15

3.15≦t＜4.00

4.00≦t＜5.00

5.00≦t＜6.00

6.00

Base Metal (Hot-rolled Coils) （Commercial quality using hot-rolled coils） (unit: mm)

Width

1,600≦W＜2,000

±0.24

±0.26

±0.30

±0.35

—

—

W＜1,600

±0.20

±0.21

±0.23

±0.25

±0.46

±0.51

Nominalthickness

1.60≦t＜2.00

2.00≦t＜2.50

2.50≦t＜3.15

3.15≦t＜4.00

4.00≦t＜5.00

5.00≦t≦6.00

(unit: mm)

＊ The tolerance shall be applied to widths under 2,000 mm.Notes: 1 Thickness shall be measured at the optional spot 25 mm or more inside from the edge.

2 For nominal thicknesses over 6 mm, please consult us in advance.

Notes: 1 Thickness shall be measured at the optional spot 25 mm or more inside from the edge.

2 For nominal thicknesses over 6 mm, please consult us in advance.

Base Metal (Hot-rolled Coils)（Structural quality using hot-rolled coils）

Designation

O

X

Kind of oiling

Oiled

Non-oiled

Oiling (JIS)

Designation

S

—

Kind of skin-pass rolling

Skin-pass rolling

Non-skin-pass rolling

Skin-pass Rolling (JIS and Nippon Steel Standards)

Designation

H

N

L

X

Kind of oiling

Heavily oiled

Normally oiled

Lightly oiled

Non-oiled

Oiling (Nippon Steel Standards)

Note: In specifying heavy and light oiling, please consult us in advance.



Teo Pei San

Rectangle

Teo Pei San

Rectangle

Teo Pei San


Teo Pei San


Teo Pei San


Teo Pei San

Rectangle

Teo Pei San


Teo Pei San

Rectangle

1514

Z06

0.013

Z08

0.017

Z10

0.021

Z12

0.026

Z14

0.029

Z18

0.034

Z20

0.040

Z22

0.043

Z25

0.049

Z27

0.054

Z35

0.064

Z37

0.067

Z43

0.076

Z45

0.080

Z50

0.085

Z60

0.102

Z90

0.146

Z110

0.175

Coating massdesignation

Corresponding coating thickness

2. Corresponding Coating Thickness (unit: mm)

(unit: mm)

045

0.012

060

0.016

090

0.026

120

0.034


Corresponding coating thickness

1.0≦t＜1.6

—

37≦

39≦

41≦

43≦

20≦

18≦

18≦

16≦

—

—

Z06～Z27

1

1

0

0

0

1

2

3

3

—

—

t＜1.6

Z35, Z37

1

—

—

—

—

1

2

3

3

—

—

Bendingangle

180°

Test piece（JIS）

No. 5, rolling

direction

—

Tensilestrength （N/mm2）

〈270≦〉

270≦

270≦

270≦

270≦

340≦

400≦

440≦

490≦

570≦

—

Yield point （N/mm2）

〈205≦〉

—

—

—

—

245≦

295≦

335≦

365≦

560≦

—

Designation

SGCC

SGCD1

SGCD2

SGCD3

SGCD4

SGC340

SGC400

SGC440

SGC490

SGC570

SGCH

Type

Commercial

Grade 1

Drawing Grade 2

Grade 3

Grade 4

340N-class

400N-class


490N-class

570N-class

Commercial, hard

Z45, Z60

2

—

—

—

—

2

2

3

3

—

—

1.6≦t＜3.0

Z35, Z37

2

—

—

—

—

1

2

3

3

—

—

Z45, Z60

2

—

—

—

—

2

2

3

3

—

—

3.0≦t

Z45, Z60

2

—

—

—

—

3

3

3

3

—

—

Z06～Z27

1

1

0

0

0

1

2

3

3

—

—

Z06～Z37

2

—

—

—

—

2

3

3

3

—

—

0.60≦t＜1.0

—

36≦

38≦

40≦

42≦

20≦

18≦

18≦

16≦

—

—

0.40≦t＜0.60

—

34≦

36≦

38≦

40≦

20≦

18≦

18≦

16≦

—

—

0.25≦t＜0.40

—

—

—

—

—

（20≦）

（18≦）

（18≦）

（16≦）

—

—

1.6≦t＜2.5

—

38≦

40≦

42≦

44≦

20≦

18≦

18≦

16≦

—

—

2.5≦t

—

—

—

—

—

20≦

18≦

18≦

16≦

—

—


Notes: 1 The values represent the internal spacing of bend, expressed as the number of sheets of nominal thickness.

2 Bending test is eliminated unless otherwise specified.3 Coating adhesiveness is assessed by use of the testing methods

other than the bending test, unless otherwise specified.

4 The value in the parenthesis may be agreed upon between the producer and purchaser.

5 The value in the parenthesis is for reference sake.6 For SGC570 and SGCH, please consult us in advance.

Coating mass

Elongation （%）



Bending testTensile test

Z06～Z27

1

1

2

3

3

3

t＜3.0

Z35, Z37

2

1

2

3

3

3

Bendingangle

180°


〈270≦〉

340≦

400≦

440≦

490≦

540≦

Yield point （N/mm2）

〈205≦〉

245≦

295≦

335≦

365≦

400≦

Designation

SGHC

SGH340

SGH400

SGH440

SGH490

SGH540

Type

Commercial

340N-class

400N-class


490N-class

540N-class

Z45, Z60

2

2

2

3

3

3

3.0≦t

Z45, Z60

2

3

3

3

3

3

Z06～Z37

2

2

3

3

3

3

Test piece（JIS）

No. 5, rolling direction

No. 5, rolling direction or perpendicular to

rolling direction

1.6≦t＜2.0

—

20≦

18≦

18≦

16≦

16≦

2.0≦t＜2.5

—

20≦

18≦

18≦

16≦

16≦

2.5≦t＜3.2

—

20≦

18≦

18≦

16≦

16≦

3.2≦t＜4.0

—

20≦

18≦

18≦

16≦

16≦

4.0≦t≦6.0

—

20≦

18≦

18≦

16≦

16≦

Elongation （%）



Notes: 1 The values represent the internal spacing of bend, expressed as the number of sheets of nominal thickness.

2 Bending test is eliminated unless otherwise specified.

3 Coating adhesiveness is assessed by use of the testing methods other than the bending test, unless otherwise specified.

4 The value in the parenthesis is for reference sake.

Coating mass


Bending testTensile test

Cut-length Sheets and Coils

3. Width Tolerances

Note: The corresponding coating thickness is calculated using a density of 7.1 g/m2 and the calculated value is rounded down to the third decimal place according to JIS Z 8401.

W≦1,500

1,500＜W

In the case of using cold-rolled coils

＋70

＋100

B （cut edge）

＋100

In the case of using hot-rolled coils

A （mill edge）

＋250

Note: In the case of using hot-rolled coil base metal, “B” is commonly used as the classification of tolerance.

Classification of width

Base metalClassification of tolerance

4. Length Tolerances

(unit: mm)

In the case of using cold-rolled

coils

＋150

In the case of using hot-rolled

coils

＋150

Standards

Mechanical Properties (JIS)



Teo Pei San


Teo Pei San

Rectangle

1716

1.0≦t＜1.2

—

37≦

39≦

43≦

45≦

48≦

20≦

18≦

18≦

16≦

15≦

—

—

36≦

35≦

33≦

30≦

36≦

Testpiece

（JIS）

No. 5, rolling

direction

—

No. 5, per-pendicular to rolling direction


〈270≦〉

270≦

270≦

270≦

270≦

270≦

340≦

400≦

440≦

490≦

500≦

570≦

—

340≦

370≦

390≦

440≦

340≦

Paint bake-hardening amount

［BH amount］（N/mm2）

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

〈30≦〉

Yieldpoint

（N/mm2）

〈205≦〉

—

—

—

—

—

245≦

295≦

335≦

365≦

—

560≦

—

185≦

205≦

225≦

265≦

〈195≦〉

Designation

NSGCC

NSGCD1

NSGCD2

NSGCD3

NSGCD4

NSGCD5

NSGC340

NSGC400

NSGC440

NSGC490

NSGC500

NSGC570

NSGCH

NSGR340

NSGR370

NSGR390

NSGR440

NSGR340B

Type

Commercial

Grade 1

Grade 2

Drawing Grade 3

Grade 4

Grade 5

340N-class

400N-class


490N-class

500N-class

570N-class

Commercial, hard

340N-class

Drawing, 370N-classhigh strength 390N-class

440N-class

340N-class

0.80≦t＜1.0

—

36≦

38≦

41≦

43≦

46≦

20≦

18≦

18≦

16≦

15≦

—

—

35≦

34≦

32≦

30≦

35≦

0.60≦t＜0.80

—

36≦

38≦

41≦

43≦

46≦

20≦

18≦

18≦

16≦

15≦

—

—

34≦

33≦

31≦

29≦

34≦

0.40≦t＜0.60

—

34≦

36≦

38≦

40≦

43≦

20≦

18≦

18≦

16≦

15≦

—

—

32≦

31≦

29≦

27≦

32≦

0.25≦t＜0.40

—

—

—

—

—

—

（20≦）

（18≦）

（18≦）

（16≦）

（15≦）

—

—

—

—

—

—

—

1.2≦t＜1.6

—

37≦

39≦

43≦

45≦

48≦

20≦

18≦

18≦

16≦

15≦

—

—

37≦

36≦

34≦

31≦

37≦

1.6≦t＜2.0

—

38≦

40≦

44≦

46≦

49≦

20≦

18≦

18≦

16≦

15≦

—

—

38≦

37≦

35≦

31≦

38≦

2.0≦t

—

38≦

40≦

44≦

46≦

49≦

20≦

18≦

18≦

16≦

15≦

—

—

39≦

38≦

36≦

32≦

39≦


Notes: 1 The paint bake-hardening amount indicates the rise in yield point between before and after heat treatment at 170ºC for 20 minutes, after application of 2% prestrain.

2 The value in the parenthesis is for reference sake.3 The value in the parenthesis may be agreed upon between the producer and purchaser.4 For NSGCD3, NSGCD4 and NSGCD5 for which non-aging property is specified, Nippon Steel guarantees non-aging property for

six months after shipment from its manufacturing plants.5 For commercial, drawing, structural and commercial/hard qualities with nominal thicknesses under 0.25 mm, tensile test is as a

rule not applied.6 NSGCH is the material not subjected to annealing and commonly has Rockwell hardness (HRB) of 85 or over and Vickers hard-

ness (HV) of 170 or over, which are indicated as the reference value.7 For NSGC570 and NSGCH, please consult us in advance.

Mechanical Properties (Nippon Steel Standards) Designation of both sides

Elongation （%）


Tensile test


〈270≦〉

340≦

400≦

440≦

490≦

570≦

Yieldpoint

（N/mm2）

〈205≦〉

245≦

295≦

335≦

365≦

—

Designation

NSGHC

NSGH340

NSGH400

NSGH440

NSGH490

NSGH500

Type

Commercial

340N-class

400N-class


490N-class

500N-class

Testpiece（JIS）

No. 5, rolling

direction

Elongation （%）


1.6≦t

—

20≦

18≦

18≦

16≦

15≦


Note: The value in the parenthesis is for reference sake.

Tensile test

Bake-hardening type, drawing, high strength

Standards



1918

1.0≦t＜1.2

—

37≦

39≦

43≦

45≦

48≦

20≦

18≦

18≦

16≦

15≦

—

36≦

35≦

33≦

30≦

36≦

36≦

35≦

33≦

30≦

Testpiece（JIS）

No. 5, rolling

direction

No. 5, per-pendicular to rolling direction


〈270≦〉

270≦

270≦

270≦

270≦

270≦

340≦

400≦

440≦

490≦

500≦

570≦

340≦

370≦

390≦

440≦

340≦

340≦

370≦

390≦

440≦

Yieldpoint

（N/mm2）

〈205≦〉

—

—

—

—

—

245≦

295≦

335≦

365≦

—

560≦

185≦

205≦

225≦

265≦

〈195≦〉

155≦

205≦

225≦

265≦

Designation

LGD

LGP1

LGP2

LGP3

LGP4

LGP5

LG340

LG400

LG440

LG490

LG500

LG570

LG340R

LG370R

LG390R

LG440R

LG340RB

LG340E

LG370E

LG390E

LG440E

Type

Commercial

Grade 1

Grade 2

Drawing Grade 3

Grade 4

Grade 5

340N-class

400N-class


490N-class

500N-class

570N-class

340N-class

Drawing, 370N-classhigh strength 390N-class

440N-class

Bake-hardening type, 340N-classdrawing, high strength

340N-class

Deep drawing, 370N-class

high strength 390N-class

440N-class

0.80≦t＜1.0

—

36≦

38≦

41≦

43≦

46≦

20≦

18≦

18≦

16≦

15≦

—

35≦

34≦

32≦

30≦

35≦

35≦

34≦

32≦

30≦

0.60≦t＜0.80

—

36≦

38≦

41≦

43≦

46≦

20≦

18≦

18≦

16≦

15≦

—

34≦

33≦

31≦

29≦

34≦

34≦

33≦

31≦

29≦

0.40≦t＜0.60

—

34≦

36≦

38≦

40≦

43≦

20≦

18≦

18≦

16≦

15≦

—

32≦

31≦

29≦

27≦

32≦

32≦

31≦

29≦

27≦

0.25≦t＜0.40

—

—

—

—

—

—

（20≦）

（18≦）

（18≦）

（16≦）

（15≦）

—

—

—

—

—

—

—

—

—

—

1.2≦t＜1.6

—

37≦

39≦

43≦

45≦

48≦

20≦

18≦

18≦

16≦

15≦

—

37≦

36≦

34≦

31≦

37≦

37≦

36≦

34≦

31≦

1.6≦t＜2.0

—

38≦

40≦

44≦

46≦

49≦

20≦

18≦

18≦

16≦

15≦

—

38≦

37≦

35≦

31≦

38≦

—

—

—

—

2.0≦t

—

38≦

40≦

44≦

46≦

49≦

20≦

18≦

18≦

16≦

15≦

—

39≦

38≦

36≦

32≦

39≦

—

—

—

—


Notes: 1 The paint bake-hardening amount indicates the rise in yield point between before and after heat treatment at 170ºC for 20 minutes, after application of 2% prestrain.

2 The value in the parenthesis is for reference sake. 3 The value in the parenthesis may be agreed upon between the producer and purchaser. 4 For LPG3, LPG4 and LPG5 for which non-aging property is specified, Nippon Steel guaran-

tees non-aging property for six months after shipment from its manufacturing plants.5 For commercial, drawing, structural and commercial/hard qualities with nominal thicknesses

under 0.25 mm, tensile test is as a rule not applied.6 For LG570, please consult us in advance.

Mechanical Properties (Nippon Steel Standards) Designation of one side

Elongation （%）


Tensile test

Note: The value in the parenthesis is for reference sake.

Paint bake-hardening amount［BH amount］（N/mm2）

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

〈30≦〉

—

—

—

—

Testpiece（JIS）

No. 5, rolling

direction


〈270≦〉

270≦

270≦

340≦

400≦

440≦

490≦

500≦

310≦

370≦

400≦

440≦

Yieldpoint

（N/mm2）

〈205≦〉

—

—

245≦

295≦

335≦

365≦

—

〈185≦〉

225≦

255≦

305≦

Designation

LGHD

LGHP1

LGHP2

LGH340

LGH400

LGH440

LGH490

LGH500

LGSAPH310

LGSAPH370

LGSAPH400

LGSAPH440

Type

Commercial

Grade 1Drawing

Grade 2

340N-class

400N-class

Structural

440N-class

490N-class

500N-class

310N-class

Automotive 370N-classstructural 400N-class

440N-class

4.0≦t

—

39≦

41≦

20≦

18≦

18≦

16≦

15≦

40≦

37≦

36≦

34≦

2.5≦t＜3.2

—

35≦

37≦

20≦

18≦

18≦

16≦

15≦

36≦

35≦

34≦

32≦

3.2≦t＜4.0

—

37≦

39≦

20≦

18≦

18≦

16≦

15≦

38≦

36≦

35≦

33≦

2.0≦t＜2.5

—

33≦

35≦

20≦

18≦

18≦

16≦

15≦

34≦

33≦

32≦

30≦

1.6≦t＜2.0

—

32≦

33≦

20≦

18≦

18≦

16≦

15≦

33≦

32≦

31≦

29≦


Elongation （%）


Tensile test

Standards



Note: Please consult us in advance per every order.

2120

Available Sizes for Nominal Thickness and Width

（1,250、1.8）

（1,250、2.0）

（1,840、1.8）

（1,840、0.5）（1,524、0.48）

（1,000、0.23）（1,100、0.24）（1,219、0.27）（1,245、0.35）（1,350、0.4）（1,240、0.29）

（610、0.23）

（1,524、0.5）

（1,245、0.4）

（1,350、0.48）

（610、2.0）

（1,245、1.8）

（1,245、2.0）

（1,524、1.8）

（1,524、1.6）

（1,600、1.6）

（1,600、0.6）

（1,550、0.55）

（1,000、0.3）（1,219、0.35）（1,245、0.4）（1,250、0.45）

（610、0.3）

（1,550、0.6）

（1,000、0.35）

（1,250、0.55）

（610、2.0）

（1,250、1.8）

（1,250、2.0）

（1,840、1.8）

（1,840、0.5）（1,000、0.35）

（1,000、0.25）（914、0.23）

（1,245、0.35）（1,350、0.4）

（610、0.23）

（1,245、0.4）

（1,350、0.5）

（610、2.0）

（914、0.3）（1,100、0.35）

（1,245、0.4）

（610、0.3）

（914、0.35）（1,100、0.4）

（1,245、0.9）（610、0.9）

（1,250、1.8）

（1,250、2.3）

（1,829、1.8）

（1,829、1.6）（1,840、1.6）

（1,829、1.6）（1,840、1.6）

（1,840、0.6）

（990、0.3）

（1,000、0.4）

（1,000、0.35）（1,350、0.4）

（1,450、0.5）

（610、0.3）

（1,350、0.5）

（1,450、0.6）

（610、2.3）

（1,250、1.8）

（1,250、2.3）

（1,829、1.8）

（1,829、1.6）（1,840、1.6）

（1,829、0.8）（1,600、0.7）

（1,550、0.65）（1,400、0.6）

（1,250、0.55）（1,245、0.5）

（1,840、0.8）

（1,829、0.7）

（740、0.3）

（1,600、0.65）（1,550、0.6）（1,400、0.55）

（1,250、0.5）（1,245、0.4）

（610、0.3）

（740、0.4）

（610、2.3）

（1,250、1.8）

（1,250、2.3）

（1,829、1.8）

（740、0.4）

（1,219、0.4）（740、0.3）

（1,400、0.55）（1,550、0.6）

（610、0.3）

（1,219、0.55）

（1,550、0.7）（1,400、0.6）

（610、2.3）

● Drawing, Grades 4 and 5 (base metal: cold-rolled coils)

● Drawing, High Strength (incl. bake-hardening type): 340~440N-class (base metal: cold-rolled coils)

● Deep Drawing, High Strength: 340~440N-class (base metal: cold-rolled coils)

Regarding the above products, please consult us in advance per every order.

（1,829、0.8）（1,840、0.8）

（1,829、0.7）

600

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

800 1,000 1,200

Width （mm）

Thic

knes

s （m

m）

1,400 1,600 1,800 600

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

800 1,000 1,200

Width （mm）

Thic

knes

s （m

m）

1,400 1,600 1,800

600

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

800 1,000 1,200

Width （mm）

Thic

knes

s （m

m）

1,400 1,600 1,800600

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

800 1,000 1,200

Width （mm）

Thic

knes

s （m

m）

1,400 1,600 1,800

600

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2

2.4

800 1,000 1,200

Width （mm）

Thic

knes

s （m

m）

1,400 1,600 1,800

600

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2

2.4

800 1,000 1,200

Width （mm）

Thic

knes

s （m

m）

1,400 1,600 1,800

600

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2

2.4

800 1,000 1,200

Width （mm）

Thic

knes

s （m

m）

1,400 1,600 1,800

Available Sizes

Structural: 400N-class (base metal: cold-rolled coils)

Commercial, Hard and Structural: 570N-class (base metal: cold-rolled coils)

Drawing, Grade 2 (base metal: cold-rolled coils)

Structural: 440~500N-class (base metal: cold-rolled coils)

Commercial and Structural: 340N-class (base metal: cold-rolled coils)

Drawing, Grade 1 (base metal: cold-rolled coils) Drawing, Grade 3 (base metal: cold-rolled coils)

Commercial and structural: 340N-class

Structural: 400N-class

Structural: 440N-class490N-class500N-class

Commercial, hard and structural: 570N-class

Drawing, grade 1 Drawing, grade 3

Drawing, grade 2

Notes: 1 Regarding widths of chromate-free treated products (QM, QFK) that exceed 1,250 mm, please consult us in advance per every order.2 Nominal sizes other than those listed below are available upon request, so please consult us in advance per every order.



2322

Available Sizes for Nominal Thickness and Width

（800、6.0）

（950、6.0）

（1,100、5.0）

（1,829、2.7）

（1,829、2.2）

（1,840、1.8）（1,840、1.6）

（1,524、2.7）

（1,600、1.8）

（610、1.6）

（1,240、4.5）

（580、1.8）（610、1.8）

（1,524、4.5）

（580、9.0）（800、9.0）

（1,240、4.5）

（1,524、4.5）

（1,524、2.7）

（1,550、2.0）

（1,829、2.2）

（1,724、2.0）

（1,550、1.6）（580、1.6）

（1,829、2.7）

（580、6.0）（950、6.0）

（1,100、5.0）

（800、6.0）

（950、6.0）

（1,100、5.0）

（1,829、2.7）

（1,829、2.0）

（1,840、1.8）（1,840、1.6）

（1,524、2.7）

（1,550、2.0）（1,550、1.8）

（610、1.6）

（1,240、4.5）

（580、1.8）（610、1.8）

（1,524、4.5）

（580、9.0）（800、9.0）

（950、6.0）（580、6.0）

（1,100、5.0）

（1,250、1.8）

（700、1.6）

（1,240、4.5）

（580、1.8）（700、1.8）

（1,524、4.5）

（1,524、1.8）（1,250、1.6）

（1,240、4.5）

（1,524、4.5）

（1,524、2.7）

（1,550、2.0）（1,829、2.0）

（1,550、1.6）（580、1.6）

（1,829、2.7）

（580、6.0）（950、6.0）

（1,100、5.0）

600

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

800 1,000 1,200

Width （mm）

Thic

knes

s （m

m）

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

Thic

knes

s （m

m）

1,400 1,600 1,800

600 800 1,000 1,200

Width （mm）

1,400 1,600 1,800

600 800 1,000 1,200

Width （mm）

Thic

knes

s （m

m）

1,400 1,600 1,800

Thic

knes

s （m

m）

Width （mm）

Thic

knes

s （m

m）

600

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

800 1,000 1,200

Width （mm）

1,400 1,600 1,800

600

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

800 1,000 1,200 1,400 1,600 1,800

Available Sizes

Commercial, and Commercial, Structural: 340N-class (base metal: hot-rolled coils)

Commercial, and Commercial, Structural: 400N-class (base metal: hot-rolled coils)

Automotive Structural: 400 and 440N-class (base metal: hot-rolled coils)

Commercial, and Commercial, Structural: 440~500N-class (base metal: hot-rolled coils)

Automotive Structural: 310 and 370N-class (base metal: hot-rolled coils)

Commercial, and commer-cial, structural: 340N-class

Commercial, and commercial, structural: 440~500N-class

Commercial, and commer-cial, structural: 400N-class

Automotive structural: 310 and 370N-class

Automotive structural: 400 and 440N-class

Notes: 1 Regarding widths of chromate-free treated products (QM, QFK) that exceed 1,250 mm, please consult us in advance per every order.2 Nominal sizes other than those listed below are available upon request, so please consult us in advance per every order.



2524

Fig. 4 Chromium Coating Mass and Ratio of White Rust Occurrence [Example](Salt Spray Test for 72 Hours)

Fig. 1 Galvanic Action of Iron (Steel) and Zinc

10

20

40

60

80

100

20 30 40

Chromium coating mass (one side: mg/m2)

50 60 70

Fig. 2 Example of Weather Resistance Test by Outdoor Exposure

1

100

200

300

2

Lapse of time (years)

3 4

Cor

rosi

on lo

ss (g

/m2 )

Fig. 3 Zinc Coating Mass and Time until Red Rust Occurrence [Example] (Salt Spray Test)

50

100

200

300

100

Zinc coating mass (one side: g/m2)

150 200

Tim

e un

til r

ed r

ust

occu

rren

ce (h

ours

)R

atio

of w

hite

rus

toc

curr

ence

(%)

White rustNo rusting

Salt water

ZincIron (Steel)

Protective Action of Zinc on Steel

Iron (steel) is generally regarded as a product susceptible to “rust (corrosion).” Howev-er, rust in steel can be greatly inhibited by galvanizing. The reason for this is that electro-chemical protection (galvanic) action that works between steel and zinc is effec-tive in rust prevention and the zinc itself is highly weather-resistant and difficult to ruse, as described below.

Galvanic Action and Weather Resistance

Fig.1 shows that rusting (dissolution) of zinc precedes that of steel, thereby protecting steel from corrosion.

When a steel plate and a zinc plate are linked using a lead wire and placed in a beaker containing an electrolytic solution (for example, salt water), the steel does not corrode and rust forms only on the zinc. This is due to galvanic action by which some of the zinc dissolves in the salt water to produce zinc ions that flow from the zinc plate to the steel plate via the lead wire to prevent corrosion of the steel. In this way, the base steel sheet of the galvanized steel sheet is protected from corrosion.

While the zinc on the galvanized steel sheet protects the base metal steel sheet of the galvanized sheet from corrosion by means of galvanic action, this is not the reason why galvanized sheets are in common use. Rather, it is due to the high corrosion resist-ance peculiar to galvanized sheets—in the case of outdoor applications, galvanized sheets offer corrosion resistance that is several times or even tens of times greater than ordinary steel sheets. That is, while zinc dissolves at a higher rate than steel, when exposed to ordinary atmosphere, zinc is slow to dissolve and difficult to corrode.

Research has been conducted for many years on the outdoor service life (the peri-od of time before red rust appears) of galvanized sheets. In the case of galvanized sheets with a coating mass of 350 g/m2, the approximate service life is 15~18 years in rural areas and 3~8 years in industrial areas. This clearly shows how long galvanized sheets can remain in use, compared to uncoated bare steel sheets.

Next, an example of weather resistance tests by outdoor exposure is shown in Fig. 2. It is clearly understood from the test results that the corrosion of galvanized steel sheets is 5~30 times slower than that of steel sheets.

As described above, galvanized sheets remain completely free of corrosion for a very long time in appropriate application environments. There were test results in which galvanized sheets showed no corrosion loss for several years in atmospheres of low humidity. This is thought to be due to the formation of a tight, extremely thin oxide film on the surface of galvanized sheets that becomes inactive under appropriate condi-tions (in fact, an extremely thin basic zinc carbonate is produced through interaction between water, carbon dioxide and air).

Zinc Coating Mass and Corrosion Resistance

As the zinc coating mass increases, the corrosion resistance of galvanized sheets is improved (salt spray test), thereby protecting the base steel for longer periods. (Fig. 3)

Chromium Coating Mass and Corrosion Resistance

Post treatment of galvanized sheets is important in improving white rust resistance. As the chromium coating mass in chromate-treated film increases, white rust resist-ance is improved. (Fig. 4)

Test conditions (JIS Z 2371) Temperature: 35°C Salt water: 5%

Cold-rolledsheet

DURPAINT ®(Electrogalvanized sheet)

ZINKOTE ®(Electrogalvanized sheet)

Hot-dip galvanized sheet

Characteristic Properties

In the case of chromic acid treatment



2726

When inappropriate handling and application methods are used, coated steel sheets cannot demonstrate their characteris-tic properties. It is recommended that attention be paid to the following precautions regarding use.

Storage and Loading/Unloading 1 Water leakage during loading/unloading and storage consti-

tutes a cause of corrosion. Strictly avoid loading/unloading during rain and prevent exposure to seawater and dew con-densation. Also, avoid storage in atmospheres of high humidity or sulfur-dioxide. Indoor storage under dry, clean conditions is recommended.

2 Broken or torn packaging paper must be repaired. 3 It is widely known that, when hot-dip galvanized steel sheets

or coils are stored in a piled state for a long period, their sur-faces become blackened. The occurrence of this phenome-non is especially accelerated in a high-temperature, high-humidity environment. To avoid this, ealier application is rec-ommended.

　Warning ● Falling and rolling coils are very dangerous, as is the col-

lapse of piled sheets. ● Due care should be paid to storing products in a stable,

secure state. The QFK type of DURGRIP21 (corrosion resistance- and lubricity-stressing type) has a lower fric-tion coefficient and more easily causes slippage than conventional chromate-treated sheets. Therefore, partic-ular care should be paid to preventing the falling, rolling, or buckling of coils and the collapse of piled sheets.

Handling 1 When coated sheets are rubbed using organic solvents,

there are cases in which the coating film on the sheet sur-face will wear or peel off.

2 Contamination due to deposits of oil and other foreign sub-stances may cause the deterioration of paintability.

Press Forming 1 When applying severe press forming, there are cases in

which the coating film is damaged. Prior confirmation is requested when such press forming is applied.

2 In press forming, some types of extreme pressure additives contained in lubricating oil can cause melting and corrosion of the surface coating films and base metals. Prior confirma-tion is requested when such additives are used. Excessive damage to surface layers during press forming will adversely affect paintability and corrosion resistance.

　Attention ● When removing (cutting) coil binding hoops (bands) for

use, make certain that the end of the coil is directly beneath the coil center in order to prevent the end of the coil from sudden springing out of the coil end; or, be certain to conduct the removal in a place where safe-ty can be assured and no danger is posed if the coil end were to spring out upon release.

● Coils are formed by winding flat sheets. When the bind-ing hoops or other external forces that keep the sheet in coil form are removed and the coil end is freed, the coil end will spring outward to return to a flat state.

Further, there are also cases when the coil bindings become loose, allowing the coil to spring out.

Such cases may endanger nearby workers and cause damage, so careful attention must be paid when removing the coil binding hoops (bands).

Precautions in Use

Label

Steel cover

Inside angle

V.C.I. paper

Outer ring

Hoop

Strap

Woodenpad

SealPacking paper

Hoop

Longitudinal skid

Strap

Hoop

Seal protector

Lateralskid

Packing labelProduct

＊Indication of Specifications

Example of Packaging

Example of Package Label

Products Conforming to JIS Specifications

JIS G 3302 :SGCC S D1 2 3 4

X6

QM5

1：Standard No. 2：Type designation 3：Skin-pass rolling symbol

4：Surface finish symbol 5：Surface treatment symbol 6：Oiling symbol (in the case of oiling: O (N))

Products Conforming to Nippon Steel’s Own SpecificationsLGD : S D1 2 3

X5

1：Type designation 2：Skin-pass rolling symbol 3：Surface finish symbol

4：Surface treatment symbol 5：Oiling symbol (in the case of oiling: N)

Note: If skin-pass rolling is not specified, the items after surface finish symbol are indicated by moving these items to the left.

Packaging and Marking

Package Label

N E T M A S S ( T H E O )

C A S T N O .

C O I L N O .

C O N T R A C T N O . C A S E N O . I N S P E C T I O N N O .

G 2

G R O S S M A S S ( T H E O ) S H E E T S

S I Z E

S P E C I F I C AT I O N

A

D

F

H

P

J

Q

I

S TU

B

E

G

K

O

C R

L

NIPPON STEEL U.S.A.STEEL/A12303

DURGRIP＊

JIS G3302 SGCC : S D Q N X0 .80 X 914 X C1 ,657KG 1 ,720KG

367706722190280

NIPPON S T E E L CORPORATION

3–1–6479–03 0012 2410398152

M N

KIMITSU WORKSWORKSMADE MADE IN JAPANN JAPAN

＊DURGRIP equal to SILVERZINC for Japanese use.

QM4

Item

Brand name

Inspector mark

JIS certification mark

JIS accreditation organization

Specifications

JIS certification number

Coating

Size

Inspection side

Net mass

Gross mass

TMW net mass

Sheets

Coils

Length (and bundling number)

Cast number

Contract No.

Case No.

Inspection No.

Coil No.

Production date

Shipping mark

Maker’s name

Works

Country of origin

Item No.

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

QA0307043JICQA

Coated steel sheets are packaged and then shipped to protect them against damage that can be caused by normal handling and storage during the period from manufacture to practical application. A marking label is attached to each package to

indicate the details of the content. Further, an inspection sheet is sealed inside the package to guarantee the product.

Please use these label and sheet to check receipt of the pro-duct. The items described on these label and sheet are as follows.

Cut-length Sheet Coil



2928

When placing orders, confirmation is required for the following items according to each intended application.

Standards

Select the most suitable material quality from among the stan-dards described in this catalog according to the severity and methods of fabrication.

Coating Mass

Select the most suitable coating mass according to the required corrosion resistance, application conditions, and fabri-cation methods.

Sizes

The size of galvanized steel sheets (thickness, width and length) is the basic condition for product yield. Design the product refer-ring the range of available sizes described in this catalog.

Sizes are available in 0.05-mm increments for thickness and 1-mm increments for width and length.

Coils

Select coils or cut-length sheets according to shear and fabrica-tion conditions.

The selection of coils will effectively improve product yield by allowing continuous and automated operation. In the case of coils, however, some defective parts may unavoidably be included because their removal, based on inspection, is impos-sible, for which due acknowledgement is required.

Edge Finish

Specify either mill edges or slit edges according to the applica-tion conditions.

Surface Treatment

Select the most suitable surface treatment from among those described in this catalog according to the treatment method after fabrication and the application conditions.

Oiling

The decision to use, or not use, corrosion-resistant oiling can be made separately from the kind of surface treatment. Oiling is recommended in order to improve intermediate rust resist-ance, to mitigate fingerprints and damage during handling, and to maintain lubrication during press forming.

Moreover, oiling is indispensable for galvanized sheets that will not receive any surface treatment.

Package Mass

Specify the package mass according to the local loading/un-loading capacity and work efficiency.

The heavier the coating mass, the higher the work efficien-cy. In the case of coils, specify the maximum mass (the mini-mum mass if necessary).

Inside and Outside Coil Diameters

In the case of coils, specify the inside and outside coil diamet-ers according to the specifications of the uncoilers on the shearing line.

When selecting inside diameters, it is necessary to consid-er the occurrence of break and reel marks on the area of the inside diameter, depending on the thickness.

Dimensional Accuracy

(Thickness, Width and Length)

Dimensional accuracy of thickness, width and length is guar-anteed within the range of sizes described in this catalog.

However, depending on the conditions under which fin-ished products are to be applied, there are cases that require strict accuracy with respect to the precision assembly of the fin-ished products and to the dimensional accuracy of the parts. In such cases, prior consultation is recommended to decide the dimensional accuracy required for the material.

Applications,

Fabrication Methods and Others

It is requested that as much information as possible be provid-ed pertaining to the intended applications, fabrication methods, and other necessary items.

This will allow Nippon Steel to implement material design and quality control that more accurately conform to the applica-tion methods and conditions at user plants.

Guide to Ordering

Welding and Brazing 1 In resistance welding, because the electrodes are soiled by

the pick up of zinc, they should be properly maintained and replaced at regular intervals.

In seam welding, the service life of electrodes can be extended by using a knurl-gear driving system.

2 In welding, fumes consisting mainly of zinc oxides are gener-ated. Although the effect of these fumes will differ depending on the working environment, it is recommended that welding be conducted in a well-ventilated place.

3 In brazing, avoid high-temperature brazing using silver and other brazing fillers.

Penetration of zinc alloy into crystal boundaries can occur, thereby causing brittle fracture in some cases.

Degreasing 1 The use of weak alkaline-type and organic solvents and

nonionic-type detergents is recommended for degreasing. Some types of degreasing agents such as strong alka-

line agents cause melting of the coating films and corrosion of the zinc. Prior confirmation is requested when such agents are used.

2 In the case of degreasing at high temperatures (more than 60ºC) or using ultrasonic cleaning, there are cases in which the coating film is damaged. Due care should be taken to prevent this.

3 Conduct sufficient drying after degreasing. Handling in an insufficiently dry state may cause the

coating film to peel off. 4 In alkali ion cleaning, there are cases in which oily substanc-

es remaining in the cleaning water may adversely affect the coating film. Prior confirmation is requested when such cleaning is applied.

Painting Because paintability differs depending on the type of paint and the coating method applied, confirmation is required, prior to application, of the paintability employing the paint to be practi-cally used.

Aging Generally, steel sheets tend to show deterioration in quality over time— e.g. degraded formability, stretcher strains, and coil breaks. To avoid this, usage at the earliest possible time is recommended.

However, this problem can be avoided if products with aging resistance are selected.

Others 1 Prior confirmation is requested when galvanized sheets are to

be exposed to high-temperature conditions for a long time. 2 Avoid treating in acid or strong alkaline environments.

(There are cases in which phosphate zinc and other chemi-cal treatments used for treating the base steel sheets for painting can have high acidity and cause the film to melt.)

When inappropriate handling and application methods are used, coated steel sheets cannot demonstrate their characteris-tic properties. It is recommended that attention be paid to the following precautions regarding use.

Precautions in Use



3130

Civil Engineering and Building Construction

Guard rails, corrugate pipes, spiral pipes,deck plates, ducts, safe plates,

roofing materials, fences, noise-arresting walls, scaffolding pipes, light-gauge shapes, shutters,

sashes, doors, housing structural member

Automobiles

Floors, various parts

Shipbuilding

Ducts, panels

Electric Home Appliances

Refrigerators, washing machines, heaters,air conditioners, automatic vending machines,

parts for show cases

Industrial Machinery

Various containers for the transportof agricultural products,

other parts requiring corrosion resistance

Applications



3332

Remark: The coil width of 610 mm may be regarded as the standard width according to the agree-ment between the producer and purchaser.

(unit: mm)Table 2 Standard Width and Standard Length of Cut-length Sheets

Standard width

762

914

1,000

1,219

1,524

1,829

Standard length of cut-length sheets

1,829 2,134 2,438 2,743 3,048 3,353 3,658

1,829 2,134 2,438 2,743 3,048 3,353 3,658

2,000

2,438 3,048 3,658

3,048

3,658

Remarks: 1. The figures in the parenthesis shall apply to the coating mass designations Z18 or over.2. The thicknesses of 0.65 mm and 0.75 mm may be regarded as the standard nominal

thicknesses according to the agreement between the producer and purchaser.

(unit: mm)Table 1 Standard Nominal Thickness

（0.27）（0.30）（0.35） 0.40 0.50

0.60 0.70 0.80 0.90 1.0 1.2

1.4 1.6 1.8 2.0 2.3 2.8 3.2

3.6 4.0 4.5 5.0 5.6 6.0

b (width)

R

Coil

4 per optional length of 2,000

2 per optional length of 2,000

Length

Cut-length sheet

2,000 or over

Under 2,000

4

2

Width

Under 630

630 or over

(unit: mm)Table 3 Maximum Camber (Base Metal: Cold-rolled Coils)

Fig. 1 Out-of-square for Cut-length Sheets

JIS G 3302-2007 (Excerpt)Reference Data

The standard sizes of cut-length sheets and coils shall be as shown in the following. However, the standard nominal thickness of corrugated sheets and the standard width and length of corrugated sheets before corrugation shall be as given in Annex 2, and the standard length and finished width of corrugated sheets shall be as given in JIS G 3316.

Standard Sizes

The sizes of cut-length sheets and coils shall be as shown in the following.1. The thickness, width and length of cut-length sheets shall be indicated in millimeters.2. The thickness and width of coils shall be indicated in millimeters. However, if the

mass of coil is to be indicated by theoretical mass, the length shall be indicated in meters.

3. The thickness of cut-length sheets and coils shall be indicated in terms of the thick-ness of base metal before coating in millimeters, which shall be regarded as the nominal thickness.

Size Indication System

Shapes

Out-of-square for cut-length sheets shall be expressed as R/b×100 (%) and shall not exceed 1%.

Table 6 Flatness (Base Metal: Hot-rolled Coils)

2,000 to 2,300

—

—

24 max.

21 max.

1,250 to under 1,600

18 max.

16 max.

14 max.

13 max.

Width

1,600 to under 2,000

20 max.

16 max.

14 max.

13 max.

Under 1,250

16 max.

16 max.

14 max.

13 max.

Thickness

1.60 to under 3.15

3.15 to under 4.00

4.00 to under 6.00

6.00

(unit: mm)

Remark: The flatness shall be measured on a surface plate. The flatness is calculated by deducting the thickness of sheets and coils from the maximum distortion and shall apply to the top side of sheets and coils.

Center buckle

6 max.

8 max.

8 max.

9 max.

Type

Edge wave

8 max.

9 max.

11 max.

13 max.

Bow

12 max.

15 max.

15 max.

20 max.

Width

Under 1,000

1,000 to under 1,250

1,250 to under 1,600

1,600 or over

(unit: mm)Table 5 Flatness (Base Metal: Cold-rolled Coils)

Mass of cut-length sheets: The mass of cut-length sheets shall be indicated, as a rule, in kilograms using theoretical mass.Mass of coils: The mass of coils shall be indicated in kilograms using either actual or theoretical mass.Mass calculation method: The method to calculate the mass of cut-length sheets and coils shall be as given in Table 7 according to nominal size and coating mass.

Mass and Tolerances

Coil

5 per option-al length of 2,000

Length

Cut-length sheet

2,500 to under 4,000

8

6

5

Under 2,500

5

4

3

4,000 or over

12

10

8

Width

Under 630

630 to under 1,000

1,000 or over

(unit: mm)Table 4 Maximum Camber (Base Metal: Hot-rolled Coils)

Table 7 Mass Calculation Method

Calculation procedure

Basic mass of base metal

Unit mass of base metal

Unit mass after coating

Area of sheet

Mass per sheet

Mass per bundle

Total mass

Unit mass of coil

Mass per coil

Total mass

kg/mm·m2

kg/m2

kg/m2

m2

kg

kg

kg

kg/m

kg

kg

Calculation method

7.85 (thickness 1mm·area 1 m2)

Basic mass (kg/mm·m2) ×Nominal thickness (mm)

Unit mass of base metal (kg/m2)＋Coating mass constant (Table 8)

Width (mm) ×Length (mm) ×10-6

Unit mass after coating (kg/m2) ×Area (m2)

Mass per sheet (kg) ×No. of sheets with identical sizes in a bundle

Lump sum of mass per bundle (kg)

Unit mass after coating (kg/m2) ×Width (mm) ×10-3

Unit mass of coil (kg/m) ×Length (m)

Lump sum of mass per coil (kg)

No. of digits (calculated results)

—

Rounded off to 4-digit significant figures




Rounded off to an integral value of kg

Integral value of kg


Rounded off to an integral value of kg

Integral value of kgRemarks: 1. The number of sheets for which the bundled mass is specified shall be calculated by dividing the specified mass by a single sheet mass of

identical shape, sizes and coating mass, to be rounded to an integral value.2. The width used to calculate the area of corrugated sheets shall be the size before corrugation.3. The method to round off the figures shall be as given in JIS Z 8401 (Guide to the rounding of numbers).

Cut-length sheet

Coil



3534

Standard thickness（mm）

0.25

0.27

0.30

0.35

0.40

0.50

0.60

0.70

0.80

0.90

1.0

1.2

1.4

1.6

1.8

2.0

2.3

2.8

3.2

3.6

4.0

4.5

6.0

Z110

3.209

3.366

3.601

3.994

4.386

5.171

5.956

6.741

7.526

8.311

9.096

10.67

12.24

13.81

15.38

16.95

19.30

23.23

26.37

29.51

32.65

36.57

48.35

Z90

2.996

3.153

3.388

3.781

4.173

4.958

5.743

6.528

7.313

8.098

8.883

10.45

12.02

13.59

15.16

16.73

19.09

23.01

26.15

29.29

32.43

36.36

48.13

Z60

2.685

2.842

3.077

3.470

3.862

4.647

5.432

6.217

7.002

7.787

8.572

10.14

11.71

13.28

14.85

16.42

18.78

22.70

25.84

28.98

32.12

36.05

47.82

Z50

2.573

2.730

2.965

3.358

3.750

4.535

5.320

6.105

6.890

7.675

8.460

10.03

11.60

13.17

14.74

16.31

18.67

22.59

25.73

28.87

32.01

35.94

47.71

Z45

2.528

2.685

2.920

3.313

3.705

4.490

5.275

6.060

6.845

7.630

8.415

9.985

11.56

13.13

14.70

16.27

18.62

22.55

25.69

28.83

31.97

35.89

47.67

Z43

2.497

2.654

2.889

3.282

3.674

4.459

5.244

6.029

6.814

7.599

8.384

9.954

11.52

13.09

14.66

16.23

18.59

22.51

25.65

28.79

31.93

35.86

47.63

Z37

2.444

2.601

2.836

3.229

3.621

4.406

5.191

5.976

6.761

7.546

8.331

9.901

11.47

13.04

14.61

16.18

18.54

22.46

25.60

28.74

31.88

35.81

47.58

Z35

2.421

2.578

2.813

3.206

3.598

4.383

5.168

5.953

6.738

7.523

8.308

9.878

11.45

13.02

14.59

16.16

18.51

22.44

25.58

28.72

31.86

35.78

47.56

Z25

2.313

2.470

2.705

3.098

3.490

4.275

5.060

5.845

6.630

7.415

8.200

9.770

11.34

12.91

14.48

16.05

18.41

22.33

25.47

28.61

31.75

35.68

47.45

Z22

2.268

2.425

2.660

3.053

3.445

4.230

5.015

5.800

6.585

7.370

8.155

9.725

11.30

12.87

14.44

16.01

18.36

22.29

25.43

28.57

31.71

35.63

47.41

Z20

2.248

2.405

2.640

3.033

3.425

4.210

4.995

5.780

6.565

7.350

8.135

9.705

11.28

12.85

14.42

15.99

18.34

22.27

25.41

28.55

31.69

35.61

47.39

Z10

2.113

2.270

2.505

2.898

3.290

4.075

4.860

5.645

6.430

7.215

8.000

9.570

11.14

12.71

14.28

15.85

18.21

22.13

25.27

28.41

31.55

35.48

47.25

Z14

2.166

2.323

2.558

2.951

3.343

4.128

4.913

5.698

6.483

7.268

8.053

9.623

11.19

12.76

14.33

15.90

18.26

22.18

25.32

28.46

31.60

35.53

47.30

Z08060

2.083

2.240

2.475

2.868

3.260

4.045

4.830

5.615

6.400

7.185

7.970

9.540

11.11

12.68

14.25

15.82

18.18

22.10

25.24

28.38

31.52

35.45

47.22

Z18120

2.207

2.364

2.599

2.992

3.384

4.169

4.954

5.739

6.524

7.309

8.094

9.664

11.23

12.80

14.37

15.94

18.30

22.22

25.36

28.50

31.64

35.57

47.34

Z12090

2.146

2.303

2.538

2.931

3.323

4.108

4.893

5.678

6.463

7.284

8.033

9.603

11.17

12.74

14.31

15.88

18.24

22.16

25.30

28.44

31.58

35.51

47.28

Z06045

2.053

2.210

2.445

2.838

3.230

4.015

4.800

5.585

6.370

7.155

7.940

9.510

11.08

12.65

14.22

15.79

18.15

22.07

25.21

28.35

31.49

35.42

47.19

Z27

2.344

2.501

2.736

3.129

3.521

4.306

5.091

5.876

6.661

7.446

8.231

9.801

11.37

12.94

14.51

16.08

18.44

22.36

25.50

28.64

31.78

35.71

47.48

Notes: Unit mass of base metal (kg/m2) = Basic mass×Thickness (mm)Basic mass = 7.85 (kg/mm·m2)Unit mass of cut-length sheets (kg/m2) = Unit mass of base metal (kg/m2) ＋Coating mass constant

Unit Mass of Cut-length SheetsCoating mass designation


Coating mass constant

Z25

0.350

Z22

0.305

Z20

0.285

Z14

0.203

Z10

0.150

Z08060

0.120

Z18120

0.244

Z12090

0.183

Z06045

0.090



Z110

1.246

Z90

1.033

Z60

0.722

Z45

0.565

Z37

0.481

Z35

0.458

Z50

0.610

Z43

0.534

Z27

0.381

Coating Mass Constants Used to Calculate Mass

(unit: kg/m2)

Table 9 Tolerances for Mass

Theoretical mass of a single lot kg

Under 600

600 to under 2,000

2,000 or over

Tolerance %

±10

±7.5

±5

Remarks

A lot of sheets for the purpose of calculation shall consist of the sheets of identical material quality, shape, sizes and coating mass.

Tolerances for Theoretical Mass of Cut-length Sheets Tolerances for the theoretical mass of cut-length sheets shall be expressed in the per-centage values which are obtainable by dividing the difference between the actual mass and the theoretical mass obtained using the mass calculation method by the the-oretical mass and shall be as given in Table 9.

Table 8 Coating Mass Constants Used to Calculate Mass

Z06

0.090

Z10

0.150

Z12

0.183

Z18

0.244

Z14

0.203

Z20

0.285

Z22

0.305

Z25

0.350

Z27

0.381

Z35

0.458

Z37

0.481

Z45

0.565

Z60

0.722

Z08

0.120






3736


A The coating designation number is the term by which this product is specified. Because of the many variables and changing conditions that are characteristic of continuous hot-dip coating lines, the zinc coating is not always evenly divided between the two surfaces of a coated sheet; nor is it always evenly distributed from edge to edge. However, the minimum triple-spot average coating weight (mass) on any one side shall not be less than 40% of the single-spot requirement.

B As it is an established fact that the atmospheric corrosion resistance of zinc-coated sheet products is a direct function of coating thickness (weight (mass)), the selection of thin-ner (lighter) coating designations will result in almost linearly reduced corrosion performance of the coating. For example, heavier galvanized coatings perform adequately in bold atmospheric exposure whereas the lighter coatings are often further coated with paint or a similar barrier coating for increased corrosion resistance. Because of this relation-ship, products carrying the statement “meets ASTM A 653/A 653M requirements” should also specify the particular coating designation.

C International Standard, ISO 3575, continuous hot-dip zinc-coated carbon steel sheet of commercial, lockforming, and drawing qualities contains Z100 and Z200 designations.D No minimum means that there are no established minimum requirements for triple- and single-spot tests.Notes: 1. The coatig thickness may be estimated from the coating weight (mass) by using the information provided in 8.1.3.

: 2. G360, G300, G235, G210, G185, G165, G140, G115, G01, Z1100, Z900, Z700, Z600, Z450, Z350 and Z001, please consult us in advance per every order.

Table 1 Weight (Mass) of Coating Requirements A, B, C

Coating Designation

G360G300G235G210G185G165G140G115G90G60G40G30G01

Coating Designation

Z1100Z900Z700Z600Z450Z350Z275Z180Z120Z001

Type

Zinc

Type

Zinc

Inch-Pound Units

Total Both Sides, oz/ft2

3.603.002.352.101.851.651.401.150.900.600.400.30

no minimum

SI Units

Total Both Sides, g/m2

1100900700600450350275180120

no minimum

Minimum Requirement D

Triple-Spot Test

One Side

1.281.040.800.720.640.560.480.400.320.200.120.10

no minimum

One Side

390316238204154120946036

no minimum

Single-Spot Test

Total Both Sides, oz/ft2

3.202.602.001.801.601.401.201.000.800.500.300.25

no minimum

Total Both Sides, g/m2

97579059551038530023515090

no minimum

A For CS Designation, specify Type B to avoid carbon levels below 0.02%.B CS Type A describes the typical Commercial Quality product previously included in

this specification.C When a deoxidized steel is required for the application, CS and FS may be ordered

to a minimum of 0.02% total aluminum.

D May be furnished as a stabilized steel at producer’s option.E Shall be furnished as a stabilized steel.F Where an ellipsis (· · ·) appears in this table, there is no requirement, but the analysis

shall be reported.G Shall not be furnished as a stabilized steel.

Table 2(a) Chemical Requirements

Manganese

0.600.600.600.500.500.500.40

Sulfur

0.0350.0350.0350.0350.0300.0250.020

Aluminum, min F

· · ·· · ·· · ·· · ·· · ·

0.010.01

Comments

· · ·· · ·· · ·· · ·· · ·· · ·· · ·

Carbon

0.100.02 to 0.15

0.080.10

0.02 to 0.100.060.02

Designation

CS Type A A, B, C

CS Type B A, C

CS Type C A, C

FS Type A C, G

FS Type B C, G

DDS DEDDS E

Composition, %—Heat Analysis Element, max (unless otherwise shown)

Phosphorus

0.0300.0300.1000.0200.0200.0200.020

Reference Data ASTM A 653/A 653M-96 (Excerpt)

1. This specification covers steel sheet, zinc-coated (galvanized) by the hot-dip process in coils and cut lengths.2. The product is produced in a number of designations, types, grades, and classes pertaining to chemical composition and typical

mechanical properties of the steel sheet which are designed to be compatible with differing application requirements.3. This specification is applicable to orders in either inch-pound units (as A 653) or SI units (as A 653M). Values in inch-pound and SI units

are not necessarily equivalent. Within the text, SI units are shown in brackets. Each system shall be used independently of the other.

Scope

(unit: %)In the Case of Hot-rolled Base Metal

Type designation

SGHC

SGH340

SGH400

SGH440

SGH490

SGH540

C

0.15 max.

0.25 max.

0.25 max.

0.25 max.

0.30 max.

0.30 max.

Mn

0.80 max.

1.70 max.

1.70 max.

2.00 max.

2.00 max.

2.50 max.

P

0.05 max.

0.20 max.

0.20 max.

0.20 max.

0.20 max.

0.20 max.

S

0.05 max.

0.05 max.

0.05 max.

0.05 max.

0.05 max.

0.05 max.

(unit: %)In the Case of Cold-rolled Base Metal

Type designation

SGCC

SGCH

SGCD1

SGCD2

SGCD3

SGCD4

SGC340

SGC400

SGC440

SGC490

SGC570

C

0.15 max.

0.18 max.

0.12 max.

0.10 max.

0.08 max.

0.06 max.

0.25 max.

0.25 max.

0.25 max.

0.30 max.

0.30 max.

Mn

0.80 max.

1.20 max.

0.60 max.

0.45 max.

0.45 max.

0.45 max.

1.70 max.

1.70 max.

2.00 max.

2.00 max.

2.50 max.

P

0.05 max.

0.08 max.

0.04 max.

0.03 max.

0.03 max.

0.03 max.

0.20 max.

0.20 max.

0.20 max.

0.20 max.

0.20 max.

S

0.05 max.

0.05 max.

0.04 max.

0.03 max.

0.03 max.

0.03 max.

0.05 max.

0.05 max.

0.05 max.

0.05 max.

0.05 max.

Chemical Composition Chemical compositions shall be specified as in the following.



A Where an ellipsis (· · ·) appears in this table there is no requirement, but the analysis shall be reported.B Steel conforming to this designation commonly contains the strengthening elements columbium, nitrogen, phosphorus, or vanadium added singly or in combination.C Some steels may be treated by means of small alloy additions to effect sulfide inclusion control.Note: SS 80 [550], HSLAS Type A 80 [550] and HSLAS Type B 80 [550], please consult us in advance per every order.

Table 2(b) Chemical Requirements A

Manganese

· · ·· · ·· · ·· · ·· · ·· · ·

1.201.351.651.65

1.201.201.651.65

Sulfur

0.040.040.040.040.040.04

0.0350.0350.0350.035

0.0350.0350.0350.035

Copper, min (when specified)

· · ·· · ·· · ·· · ·· · ·· · ·

· · ·· · ·· · ·· · ·

· · ·· · ·· · ·· · ·

Carbon

0.200.200.250.400.500.20

0.200.200.200.20

0.150.150.150.15

Designation

SS Grd33 [230]37 [255]40 [275]50 [340] Class 1 and 250 [340] Class 380 [550]

HSLAS Type A B50 [340]60 [410]70 [480]80 [550]

HSLAS Type B B, C

50 [340]60 [410]70 [480]80 [550]

Composition, %—Heat Analysis Element, max (unless otherwise shown)

Phosphorus

0.040.100.100.200.040.04

· · ·· · ·· · ·· · ·

· · ·· · ·· · ·· · ·

A If the hardness result is 85 HRB or higher, no tension test is required.B As there is no discontinuous yield curve, the yield strength should be taken as the stress at 0.5% elongation under load or 0.2% offset.C If a higher tensile strength is required, the user should consult the producer.D No type identification is applicable to the SS designation.E Where an ellipsis (· · ·) appears in this table there is no requirement.Note: SS 80 [550], HSLAS Type A 80 [550] and HSLAS Type B 80 [550], please consult us in advance per every order.

Table 3 Mechanical Requirements, Base Metal (Longitudinal)

Inch-Pound Units

Yield Strength, min, ksi

333740505050

80 B5060708050607080

SI Units

Yield Strength, min, MPa

230255275340340340

550 B340410480550340410480550

Elongation in 2 in., min, % E 201816121212· · ·2016121022181412

Elongation in 50 mm, min, % E 201816121212· · ·2016121022181412

Grade

333740

50 Class 150 Class 250 Class 3

80 A5060708050607080

Grade

230255275

340 Class 1340 Class 2340 Class 3

550 A340410480550340410480550

Designation

SS D

HSLAS

HSLAS

Designation

SS D

HSLAS

HSLAS

Type

· · ·

Type A

Type B

Type

· · ·

Type A

Type B

Tensile Strength, min, ksi E 45525565· · ·7082

60 C 70 C 80 C 90 C 60 C 70 C 80 C 90 C

Tensile Strength, min, MPa E 310360380450· · ·480570

410 C 480 C 550 C 620 C 410 C 480 C 550 C 620 C

3938


Table 4 Typical Ranges of Mechanical Properties A, B (Nonmandatory)

Designation

CS Type ACS Type BCS Type CFS Types A and B FDDS GEDDS H

Elongation in 2˝ [50 mm], %

≥20≥20≥15≥26≥32≥40

rm Value CE

E

E

1.0/1.41.4/1.81.6/2.1

n Value DE

E

E

0.17/0.210.19/0.240.22/0.27

(Longitudinal Direction)

Yield Strength, [MPa]

[170/345][205/345][170/380][170/310][140/240][105/170]

Yield Strength, ksi

25/5030/5025/5525/4520/3515/25

A If other coatings are required, the user shoud consult the producer for availability and suitable bend test requirements.B SS Grades 50 and 80 and HSLAS Type A Grades 70 and 80 are not subject to bend test requirements. C SS Grades 340 and 550 and HSLAS Type A Grades 480 and 550 are not subject to bend test requirements.

Table 5 Coating Bend Test Requirements

Through 0.039 in.

22221000000

50

11／2

11／2

11／2

11／2

11／2

11／2

Through 1.0 mm

22100000

340

11／2

11／2

11／2

11／2

11／2

33

3222211／2

11／2

11／2

11／2

11／2

11／2

60

111111

230

32211／2

11／2

11／2

11／2

11／2

410

11111

SS, Grade B

37

32222222222

HSLAS Type B

70

11／2

11／2

11／2

11／2

11／2

11／2

SS, Grade C

255

32222222

HSLAS Type B

480

11／2

11／2

11／2

11／2

11／2

40

321／2

21／2

21／2

21／2

21／2

21／2

21／2

21／2

21／2

21／2

80

11／2

11／2

11／2

11／2

11／2

11／2

275

321／2

21／2

21／2

21／2

21／2

21／2

21／2

550

11／2

11／2

11／2

11／2

11／2

Coating Designation A

G235G210G185G165G140G115G90G60G40G30G01

G115G90G60G40G30G01

Coating Designation A

Z700Z600Z450Z350Z275Z180Z120Z001

Z350Z275Z180Z120Z001

CS, FS, DDS, EDDS

Sheet Thickness

Over 0.039 through 0.079 in.

32221000000

HSLAS Type A B

60

333333

CS, FS, DDS, EDDS

Sheet Thickness

Over 1.0 mm through 2.0 mm

32100000

HSLAS Type A C

410

33333

Inch-Pound Units／Ratio of the Inside Bend Diameter to Thickness of the Specimen (Any Direction)

Over 0.079 in.

32222110000

50

111111

SI Units／Ratio of the Inside Bend Diameter to Thickness of the Specimen (Any Direction)

Over 2.0 mm

32211000

340

11111

A The typical mechanical property values presented here are nonmandatory. They are intended solely to provide the purchaser with as much information as possible to make an informed decision on the steel to be specified. Values outside of these ranges are to be expected. The purchaser may negotiate with the supplier if a specif-ic range or a more restrictive range is required for the application.

B These typical mechanical properties apply to the full range of steel sheet thickness-es. The yield strength tends to increase and some of the formability values tend to decrease as the sheet thickness decreases.

C rm Value—Average plastic strain ratio as determined by method in Specification E 517.D n Value—Strain-hardening exponent as determined by method in Specification E 646.E No typical mechanical properties have been established.F The FS designation encompasses the properties of the previous DQ grade in Specifi-

cation A 528.G The DDS designation encompasses the properties of the previous DQSK grade in

Specification A 642.H EDDS sheet will be free from changes in mechanical properties over time, that is,

nonaging.



4140

Chromate-free Hot-dip Galvanized Sheets

References

QFK

QM

QM

QFK

QN

C

Y

E

0 50 100 150 200 250

ALSHEET( AR)

◎

○

◎

○

○

○

○

○

○

○

○

○

◎

○

○

—

—

—

◎

○

◎

○

◎

○

○

○

○

△

○

△

○

○

○

◎

○

○

○

○

○

72

72

240or more

168

48 168

168

168 240

240

240

480or more

72

24 192

16

hrTribological

propertyConduc-

tivityWeld-ability

Paint-ability

＊1）＊1）＊1）＊2）＊1）

DURGRIP®

〈Reference〉

FilmProduct

Properties

Corrosion resistance

Chromate-free/Inorganic type

(General uses)


(General uses;heat-resistant uses)

QN 480or more

72

Treat-ment

DURGRIP®21

SuperDyma®

( Zn-11%AR -3%Mg-0.2%Si)

Applicationexamples

Washing machines,air conditioners

Washing machines, air conditioners,

automaticvending machines,

electric home appliance, automobile parts

Air conditioners, electric

home appliance, automobile parts

Automobile parts

Oven toasters,TV set,

heating apparatus

Air conditioners

A line-up of chromate-free SuperDyma (highly corrosion-resistant hot-dip galvanized sheet) is also available. Please consult us for more details.

【Assessment method】Corrosion resistance: Salt spray test (5%); time up to the white rust occurrence (conforming to JIS Z2371)

Tribological property: Heidon dynamic friction coefficient measurement method (steel ball 10 mm in dia; load 1.0 N; moving speed 150 mm/min)

Conductivity: Loresta MP type; assessment of conducting rate of less than 1 mΩ (contact 2 mm in dia×4; load 1.5 N)

Weldability: Spot weldability

Paintability: Melamine alkyd-type resin coating; 1 mm cross-cut tape peeling-off assessment

Chromate-free/Organic type

(Corrosion resistance- and lubricity-stressing

type)

Chromate-free/Inorganic type(Efficient welding-

stressing type)


(Scratch-resistance type; heat-resistant

uses)

Chromate-free/Organic type

(Corrosion resistance- and scratch resistance-

stressing type)

Chromic acidtreatment

Special chromate

Corrosion-resistantchromate

*1）Comparison with special chromate treatment◎: Higher ○: Similar △: Slightly lower

*2） Appropriate welding current range differs according to the treatment applied,so please consult us.

Notes: 1. This table also applies to sheets cut to length from coils by the consumer when adequate flattening measures are performed.2. For Grade 50 [340] (Classes 1, 2, and 3) use 11／2 times the values given in this table.3. For Grade 80 [550], there are no defined flatness standards.

Table 6 Structural Steel—Flatness Tolerances(Cut Lengths Only, Not Specified to Stretcher Leveled Standard of Flatness)

Flatness Tolerance (Maximum Deviation from a Horizontal Flat Surface), in. [mm]

1／2 [12]3／4 [20]1／2 [12]3／4 [20] 1 [25]

Specified Width, in. [mm]

to 60 [1500], inclusiveover 60 [1500] to 72 [1800], inclusiveto 36 [900], inclusiveover 36 [900] to 60 [1500], inclusiveover 60 [1500] to 72 [1800], inclusive

Specified Thickness, in. [mm]

Over 0.060 [1.5]

0.060 [1.5] and thinner

Note: This table also applies to sheets cut to length from coils by the consumer when adequate flattening measures are performed.

Table 7 High-Strength Low-Alloy Steel—Flatness Tolerances(Cut Lengths Only, Not Specified to Stretcher Leveled Standard of Flatness)

Flatness Tolerances (Maximum Deviation from a Horizontal Flat Surface), in.

Grade

50

3／4

11／8

3／4

11／8

11／2

340

2030203038

60

7／8

11／4

7／8

11／4

15／8

410

2232223240

70

113／8

1 13／8

13／4

480

2535253545

80

11／8

11／2

11／8 11／2

17／8

550

3038303348

Inch-Pound Units

Specified Width, in.

to 60, inclusiveover 60to 36, inclusiveover 36 to 60, inclusiveover 60

SI Units

Specified Width, mm

to 1500, inclusiveover 1500to 900, inclusiveover 900 to 1500, inclusiveover 1500

Specified Thickness, in.

Over 0.060

0.060 and thinner

Specified Thickness, mm

Over 1.5

1.5 and thinner

Flatness Tolerances (Maximum Deviation from a Horizontal Flat Surface), mm

Grade




catalogue - nippon steel

Documents

adequate flattening measures

electric home appliance

kg lump sum

erichsen fabricated part

salt spray test

chromic acid treatment

horizontal flat surface

free inorganic type