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U.D.C.: 669.14-426. December 1987

Non-alloy steel wire rod for cold drawing and/or cold rolling

EURONORM

16-87

This EURONORM replaces EURONORM 16-70 and EURONORM 15-70.

CONTENTS

SECTION I: General requirements 2

SECTION II: Specific requirements for basis steel and quality steel wire rod 7

SECTION III: Specific requirements for special steel wire rod 11

Only the last edition of the EURONORMS quoted is valid

Copyright by the Standardization Offices of the European Communities' Member States

Page 2: cold drawing

Non-alloy steel wire rod for cold drawing and/or cold rolling

General requirements

EURONORM

16 Section I

CONTENTS

Page

1.1 FIELD OF APPLICATION 3

1.2 DEFINITION 3

1.3 REFERENCES 3

1.4 DESIGNATION 3

1.5 INFORMATION TO BE SUPPLIED AT THE ΉΜΕ OF ORDERING 3

1.6 MANUFACTURING PROCESS 3

1.6.1 Steel-making process 3

1.6.2 Product-making process 3

1.7 CLASSIFICATION 3

1.8 DIMENSIONS, MASS AND TOLERANCES 4

1.9 REQUIREMENTS 4

1.9.1 General 4 1.9.2 Method of delivery 4

1.9.3 Delivery condition 4

1.10 INSPECTION 4

1.10.1 Documents and agreements relating to inspection 4

1.10.2 Extension of inspections 4 1.10.3 Inspection unit and number of samples and test pieces 4 1.10.4 Inspection of chemical composition 4 1.10.5 Inspection of decarburization, surface defects, non-metallic

inclusions and axial segregation 4 1.10.6 Testing 4

1.10.7 Re-tests 5

1.11 MARKING 5

1.12 CLAIMS 5

Only the last edition of the EURONORMS quoted is valid

Copyright by the Standardization Offices of the European Communities' Member States

Page 3: cold drawing

Page 3

LI FIELD OF APPLICATION

1.1.1 This EURONORM applies to non-alloy steel rod (wire rod) for cold drawing and/or cold rolling. The cross-section of the wire rod may be circular, square, rectangular, hexagonal, octagonal, half-round or any other shape and, as a general rule, be of nominal dimension equal to or greater than 5 mm (see EURONORM 17); the surface is smooth.

1.1.2 It does not apply to products for which specific standards already exist, such as: — steel wire rod for heat treatment (see EURONORMS 83,

84, 85 and 86); — free cutting steel wire rod (see EURONORM 87); — steel wire rod for cold heading and cold extrusion (see

EURONORM 119);

— wire rod for the manufacture of electrodes and welding products (see EURONORM 133).

1.1.3 This section applies to general requirements.

1.2 DEFINITION

For the definition of'rod' see EURONORM 79.

1.3 REFERENCES

EURONORM 17 — Wire rod in general purpose non-alloy steel for cold drawing or bright drawing — dimensions and tolerances

EURONORM 18 — Selection and preparation of samples and test pieces for iron and steel products

EURONORM 20 - Definition and classification of the grades of steel

EURONORM 21 — General technical delivery conditions for steel and iron and steel products

EURONORM 27 - Designation of steels

EURONORM 79 - Definition and classification of steel products by shape and dimensions

EURONORM 104 - Determination of depth of decarburi-zation of non-alloy and low alloy structural steels

1.4.2 Designation of wire rod comprises the following information in order:

— product (wire rod); — cross-section; — dimensions; — steel grade; — reference to this EURONORM.

Example of the designation of a wire rod of round cross-section, with a diameter of 16 mm, in 3 CD 55 steel:

Round wire rod 16 3 CD 55 EURONORM 16

1.5 INFORMATION TO BE SUPPLIED AT THE ΉΜΕ OF ORDERING

The purchaser shall give the following information at the time of ordering in order to make it possible for the supplier to comply satisfactorily with the requirements of this EURONORM:

— designation (see 1.4.2);

— quantity;

— dimensions and mass of the coils;

— surface condition (where it would be other than the as-rolled state);

— where applicable, the type of tying and labelling; — where applicable, the type of certificate and inspection

(see EU 21); — if the wire rod is intended for bright drawing this shall be

specified; — for information, the type of descaling (chemical or

mechanical).

1.6 MANUFACTURING PROCESS

1.6.1 Steel-making process

The steel-making process shall be at the discretion of the manufacturer, but it shall be made known to the purchaser on request, except for the basis quality.

1.6.2 Product-making process

The product-making process of the product shall be at the discretion of the manufacturer, but it shall be made known to the purchaser on request.

1.4 D E S I G N A T I O N

1.4.1 The designation of the steels covered by this EURONORM is in accordance with EURONORM 27.

1.7 CLASSIFICATION

Classification of the steel grades covered by this standard into non-alloy steels on the basis of the chemical composi-

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Page 4

tion and the subdivision into basis steels and quality steels (see Section II) and special steels (see Section III) are in accordance with the requirements of EURONORM 20-74.

1.10.1.4 When it is agreed to supply an acceptance certi­ficate, the requirements for quality steels (see Section II) or special steels (see Section III) are applied for the acceptance tests.

1.8 DIMENSIONS, MASS AND TOLERANCES

The manufacturer shall also inform the inspection represen­tative of the results of the ladle analysis, keeping to the elements given in Tables II. 1 and III. 1 _

For the dimensions, mass and tolerances, see EURONORM 17.

1.9 REQUIREMENTS

1.9.1 General

In addition to the requirements of this EURONORM, the general technical delivery conditions for steel and steel products (see EURONORM 21) are applicable, in the absence of other requirements specified in this EURONORM.

1.9.2 Method of delivery

Products made of 1 CD 9 steel are only delivered in lots. Products of other steel grades are delivered in casts.

1.9.3 Delivery condition

Wire rod is delivered in the as-rolled condition, in irregularly wound coils, but which can be unwound in a regular manner during subsequent transformation.

Wire rod shall be delivered properly cropped at least at one end.

1.10 INSPECTION

1.10.1 Documents and agreements relating to inspection

1.10.1.1 Setting aside the limitation specified in Sub-clause 1.10.1.2, the purchaser may request that one of the following documents be supplied to him amongst the documents specified in EURONORM 21.

— certificate of compliance with the order; — test report; — inspection certificate.

1.10.1.2 For 1 CD 9 steel, only the certificate of compliance with the order is supplied.

1.10.1.3 When it is agreed to supply a test report, this document shall indicate the results of the ladle analysis, which do not necessarily correspond to the results from the goods supplied, keeping to the elements indicated in Tables II.1 and III.I.

1.10.2 Extension of inspections

When the order is accompanied by a request for an inspection certificate the inspection shall be carried out in accordance with Table 1.1.

1.10.3 Inspection unit and number of samples and test pieces

The inspection unit is composed of all wire rod of the same diameter or equivalent dimension, originating from the same cast.

For the number of samples and test pieces the requirements of Table 1.2 apply.

1.10.4 Inspection of chemical composition

When verification of the product analysis has been agreed upon, the samples shall be taken and prepared in accordance with EURONORM 18.

1.10.5 Inspection of decarburization, surface defects, non-metallic inclusions and axial segregation

1.10.5.1 The test pieces shall be taken at an adequate distance from the ends of the coil for the inspection of surface defects, decarburization, non-metallic inclusions and axial segregation. If any re-tests have to be carried out, this distancé shall be at least 5 m for wire rod of diameter or equivalent dimension equal to or less than 7 mm and at least 4 m for wire rod of diameter or equivalent dimension greater than 7 mm.

1.10.5.2 For the determination of decarburization, polished transverse metallographic test pieces are taken for microsco­pic examination from the wire rod in the as-rolled state and then prepared and etched.

For the determination of non-metallic inclusions and axial segregation, the tests shall be carried out on the wire rod in the as-rolled state and in accordance with Sub-clause III.2.5 and III.2.6.

1.10.6 Testing

1.10.6.1 Inspection of chemical composition

The methods to be applied for verifying the product analysis shall be agreed at the time of ordering by referring to existing EURONORMS where available. For arbitration analyses, the methods shall be agreed at the time of ordering.

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1.10.6.2 Inspection of surface defects

1.10.6.2.1 General

Unless otherwise stated at the time of ordering, the selection of methods from the following is left to the discretion of the producer for revealing surface defects.

— pickling test (see 1.10.6.2.2); — magnetic particle test (see 1.10.6.2.3); — compression test (see 1.10.6.2.4); — alternating torsion test (see 1.10.6.2.5).

The specification in Clauses 1.10.6.2.4 and 1.10.6.2.5 shall be taken into account for the field of use of the compression test and the alternating torsion test.

The depth of the defects shall be determined on the wire rod in the as-rolled state by means of a filed test piece or by microscopy. In the case of arbitration, microscopic inspec­tion shall be carried out.

1.10.6.2.2 Pickling test

In the pickling test, a 200 mm length of wire rod in the as-rolled state is immersed — as a test piece intended to reveal any surface defects — in a sulphuric acid or hydrochlo­ric aqueous solution composed, respectively, of

— 1 volume of sulphuric acid ρ = 1.84 kg/1) and 9 volumes of water;

— 1 volume of hydrochloric acid (p = 1.19 kg/1) and 1 volume of water.

The test piece is pickled by immersion in a solution at a temperature of between 60 and 70 °C, until the oxide is removed and for a maximum period of 15 minutes. The pickling shall be followed immediately by rinsing of the test piece first of all in running water and then in denatured methyl or ethyl alcohol and then dried in air.

1.10.6.2.3 Magnetic particle test

For the magnetic particle test, a 200 to 300 mm length of wire rod in the as-rolled state is subjected to a surface inspection after prior magnetization.

The presence of defects is shown by the alignment of the magnetic particles in the presence of the magnetic field.

1.10.6.2.4 Compression test

For the compression test, a straight length of wire rod in the as-rolled state, of length equal to one and a half times the corresponding nominal dimension and with flat-end faces perpendicular to the longitudinal axis, is crushed by a press at an initial temperature of approximately 900 °C until its length is reduced to 50% of its initial value.

For steel CD 53 and all steels with lower carbon content, the compression test may be carried out cold at the discretion of the manufacturer.

1.10.6.2.5 Alternating torsion test

The alternating torsion test is carried out on the wire rod in the as-rolled state, or where applicable after spheroidizing. The test length shall be 50 times the diameter in the case of

round cross-sections and 56,4 y ^ for other cross-sections, with a maximum of 500 mm. The test shall be carried out firstly in one direction up to the number of 360° twists indicated in Table 1.2 and then in the opposite direction up to the same number of twists. If the test piece breaks prematurely, and there are no surface defects visible, a re-test shall be carried out in which the test piece may not break before the end of the test.

For steels 2 CD 5 to 2 CD 25, the alternating torsion test is carried out on wire rod of diameter (or equivalent dimen­sion) less than 15 mm. For other grades of steel, the test is carried out on wire rod of diameter (or equivalent dimen­sion) equal to or less than 8 mm.

1.10.7 Re-tests

EURONORM 21 applies for re-tests.

1.11 MARKING

The coils in each consignment shall bear a mark containing the following information:

— dimensions of the transverse cross-section of the wire rod; — designation of the steel grade·, — cast number (except in the case of basis steel 1 CD 9); — name and identification mark of the producer; — any other agreed information. The marking shall be resistant to pickling.

L12 CLAIMS

For claims and action on them the requirements of EURO-NORM 21 apply.

TABLE 1.1 — Extension of inspections (see 1.10.2)

Type of inspection

Cast analysis Surface defects Decarburization Non-metallic inclusions Axial segregation Product analysis

+ = is performed — = is not performed O - is only performed if agreed on order

Quality steels

+ + — — -O

ng

Special steels

+ + O O O o

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TABLE 1.2 — Acceptance unit and number of samples and test pieces (see 1.10.3)

TABLE 1.3 — Minimum number of twists in the alternating torsion test (see 1.10.6.2.5)

Type of requirement

Product analysis

Permissible depth of surface defects

Permissible depth of decarburization

Non-metallic inclusions

Axial segregation

Number of samples or test pieces

3, originating from 3 different coils

1 every 10 tonnes with a minimum of 3

1 every 20 tonnes with a minimum of 3

Steel grade

2 CD 5 to 2 CD 25

2 CD 30 to 2 CD 55 3 CD 53 to 3 CD 55

2 CD 58 to 2 CD 95 3 CD 58 to 3 CD 95

Minimum number of twists in each direction with a

nominal diameter 'd' or an equivalent dimension

mm =!8 >8=S10 > 10 ̂ 15

5

4

3

4

-

-

3

-

-

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Non-alloy steel wire rod for cold drawing and/or cold rolling

Specific requirements for basis steel and quality steel wire rod

EURONORM

16 Section II

CONTENTS

Page

ILI FIELD OF APPLICATION 8

II.2 REQUIREMENTS 8

11.2.1 Chemical composition 8 11.2.2 Defects 8 11.2.3 Depth of cracks 8

Only the last edition of the EURONORMS quoted is valid

Copyright by the Standardization Offices of the European Communities' Member States

Page 8: cold drawing

Page 8

ILI FIELD OF APPLICATION

This section of this EURONORM applies to basis steel or quality steel rod (wire rod) for cold drawing and/or cold rolling.

II.2 REQUIREMENTS

For the general requirements see Section I.

II.2.1 Chemical composition

The values indicated in Table II. 1 apply for the chemical composition of the cast. The permissible deviations of the product analysis in relation to the ladle analysis are given in Table II.2.

Except for steel 1 CD 9, the permissible deviations on the product analysis for the carbon content refer to the actual

TABLE ILI — Chemical composition (ladle analysis) (')

ladle analysis value given in the inspection certificate or, where appropriate, the test report (see 1.10.1).

For the other elements and for the carbon content of steel 1 CD 9, the permissible deviations on the product analysis refer to the specified ladle analysis limit values given in Table II. 1.

IL2.2 Defects

Wire rod shall not have any internal and/or surface defects such as holes, segregation, cracks, seams, incrustations, notches, scale or burrs which may be detrimental to its appropriate use.

II.2.3 Depth of cracks

For the inspection described in Sub-clauses 1.10.3 and 1.10.6.2, the depth of crack limit values corresponding to the classes indicated in Table II.3 apply.

Steel grade

Class

Basis

Quality

Designation

1 CD 9

2 CD 5 2 CD 7 2 CD 8 2 CD 10 2 CD 15 2 CD 20 2 CD 25 2 CD 30 2 CD 35 2 CD 40 2 CD 45 2 CD 50 2 CD 53 2 CD 55 2 CD 58 2 CD 60 2 CD 63 2 CD 65 2 CD 68 2 CD 70 2 CD 73 2 CD 75 2 CD 78 2 CD 80 2 CD 83 2 CD 85 2 CD 88 2 CD 95

(') Elements not inc intended for finish

(2) For quality steels other deoxidizing

(3) For quality steels maximum value n<

(4) These steels may 1 (5) A maximum Cu c

C

%

=S 0.10

<0.06 <0.08

0.06-0.10 0.08-0.13 0.13-0.18 0.18-0.23 0.23-0.28 0.28-0.33 0.33-0.38 0.38-0.43 0.43-0.48 0.48-0.53 0.50-0.55 0.53-0.58 0.55-0.60 0.58-0.63 0.60-0.65 0.63-0.68 0.65-0.70 0.68-0.73 0.70-0.75 0.73-0.78 0.75-0.80 0.78-0.83 0.80-0.85 0.83-0.88 0.85-0.90 0.90-0.99

luded in this table n ing of the cast. from steel 2 CD 1!

elements are present. from steel 2 CD

)t exceeding 1.20% ma >e supplied as rimming ontent of 0.20% may b

Si

% (2)

=S0.30

(4) (4) (4) (4)

0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30 0.10-0.30

lay not be intentiona

onwards, the minim

.5 onwards,· a difiere / be agreed at the time steels (Si < 0.05%) or : agreed at the time of

Mn

%(3)

SS0.60

0.20-0.45 0.20-0.50 0.20-0.50 0.20-0.60 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70 0.30-0.70

ly added to the stee

um value of the silici

nt manganese conten of ordering. not (killed and semi-ki ordering.

Ρ

%

0.060

0.030 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040

without

)n conten

t range, :

Ued;Si<(

S

%

0.050

0.030 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040

the agre

range η

rom the

).30%).

Cr Ni

%

-

0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25

anent of

lay be ret

one givei

%

-

0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25

the purch

luced to

ι in the

Mo

%

-

0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08

iser excep

).05% as

table but

Cu

%(5)

-

0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30

t those

ong as

with a

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TABLE 11.2 — Permissible deviations in the product analysis in relation to the limit values applicable for the ladle analysis

Page 9

Element

C

Si

Mn

Ρ and S

Cr, Ni, Mo and Cu

Steel grade

1 CD 9

2 CD 5 2 CD 7

2 CD 8 to 2 CD 55

2 CD 58 to 2 CD 95

All steel grades

All steel grades

1 CD 9 2 CD 7 2 CD 8 2 CD 10

All other steel grades

Al! steel grades

Permissible deviation in product analysis

(')

+ 0.03

+ 0.03(2)(3)

±0.03 (2)

±0.04(2)

±0.03

±0.04

+ 0.010

+ 0.005

-

( ' ) The deviations relate to the value in Table II. 1 except for the case specified in note (2). In a cast the deviation shown by an element in the product analysis may only be below the minimum value or above the maximum value of the range given for the ladle analysis, but never the two at once. For the elements defined by a maximum content, the permissible deviation relates to this maximum.

(2) The permissible deviations for the steels relate to the actual ladle analysis indicated in the inspection certificate, or where appro­priate, the test report.

(3) No lower limit is specified for the values from the product analysis.

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Page 10

TABLE II.3 — Limit values for the depth of cracks corresponding to the inspection of the ends

D. υ ■α Ρ

70

1 S

ι η

0 5

04

03

0?

η ι

/

/

/

ι_

t f

Class 1

1 L

/

/

/

/

Class 2

/

/ /

/

mm

y /

/

/

è /

t f

/ /

/

/

0 5 10 20 30 40 50 60 70 80 90 100 110 120

Diameter

Class 1 = Basis steels Class 2 = Quality steels

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Non-alloy steel wi re rod for cold drawing and/or cold rolling

Specific requirements for special steel wire rod

EURONORM

16 Section III

CONTENTS

Page

111.1 FIELD OF APPLICATION 12

111.2 REQUIREMENTS 12

111.2.1 Chemical composition 12 111.2.2 Defects 12 111.2.3 Depth of cracks 12 111.2.4 Depth of decarburization 12 111.2.5 Inspection of non-derformable non-metallic inclusions 12 111.2.6 Inspection of axial segregation 12

Only the last edition of the EURONORMS quoted is valid

Copyright by the Standardization Offices of the European Communities' Member States

Page 12: cold drawing

Page 12

III.l FIELD OF APPLICATION

This section of this EURONORM applies to special steel rod (wire rod) for cold drawing and/or cold rolling.

III.2 REQUIREMENTS

For the general requirements see Section I.

III.2.1 Chemical composition

The values indicated in Table III.l apply for the chemical composition of the cast. The permissible deviations of the product analysis in relation to the ladle analysis are given in Table III.2.

111.2.4.2 Total decarburization (partial and complete)

The limit values for depth of total decarburization in Table III.4 apply.

111.2.4.3 Inspection of decarburization

Inspection of decarburization is carried out in accordance with EURONORM 104 with the following deviations.

The total decarburization is inspected by microscopy with a magnification of χ 200 on an etched transverse metallogra­phic test piece. The total depth of decarburization shall be taken as the mean of eight measurements at the ends of four diameters at 45° to each other, starting from the area of maximum decarburization, at the same time avoiding starting from a local surface defect. In the calculation of the above mean value, any measuring point of the seven remaining situated in a local surface defect shall not be taken into account in the calculation.

III.2.2 Defects

Wire rod shall not have any internal and/or surface defects such as shrink holes, segregation, cracks, seams, incrus­tations, notches, scale or burrs which may be detrimental to its appropriate use.

III.2.3. Depth of cracks

For the inspection described in Sub­clause 1.10.5 and 1.10.6.2, the depth of crack limit values corresponding to the values indicated in Table III.3 apply.

111.2.4 Depth of decarburization

The specifications given below regarding the depth of decarburization and the inspection procedures relating to it (see also 1.10.5) only apply if agreed at the time of ordering.

I II .2.5 Inspection of non-deformable non-

metallic inclusions

The method for inspecting non­metallic inclusions and the assessment criteria for it shall be agreed at the time of ordering by referring, where possible, to the following standards:

— DIN 50 602/1985 ­ Metallographische Prüfverfahren ­Mikroskopische Prüfung von Edelstahlen auf nichtmetall­ische Einschlüsse mit Bildreihen;

— NF A 04­107 ­ 1980 ­ Produits sidérurgiques ­Méthode micrographique de détermination de la teneur en inclusions non métalliques du fil machine en acier non allié;

— ASTM E 45/1985 — Standard practice for determining the inclusion content of steel;

— UNI 3244/1980 (with its Annexe) — Esame microsco­pico dei materiali ferrosi — Valutazione delle inclusioni non metalliche negli acciai mediante immagini tipo;

— Image analysers (Direct image measurement­automatic).

III.2.4.1 Complete decarburization III.2.6 Inspection of axial segregation

The wire rod shall not have complete decarburization. The method for inspecting axial segregation and the assess­ment criteria relating to it shall be agreed at the time of ordering.

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TABLE III.l — Chemical composition (ladle analysis) (')

Steel grade

Class

Special

Designation

3 CD 53 3 CD 55 3 CD 58 3 CD 60 3 CD 63 3 CD 65 3 CD 68 3 CD 70 3 CD 73 3 CD 75 3 CD 78 3 CD 80 3 CD 83 3 CD 85 3 CD 88 3 CD 95

C

%

0.50-0.55 0.53-0.58 0.55-0.60 0.58-0.63 0.60-0.65 0.63-0.68 0.65-0.70 0.68-0.73 0.70-0.75 0.73-0.78 0.75-0.80 0.78-0.83 0.80-0.85 0.83-0.88 0.85-0.90 0.90-0.99

Si

%

0.10-0.30

Mn

%(2)

0.50-0.80

Ρ S Cr Ni Cu Mo max.

%

0.030

%

0.030

%

0.15

%

0.15

%

0.15

Cr + Ni + Cu max. = 0.35

%

0.08

( ' ) Elements not included in this table may not be intentionally added to the steel without the agreement of the purchaser, except those intended for the production of the cast.

(2) A different manganese content from the or at the time of ordering.

e indicated in the table but of the same range and with a maximum value not exceeding 1.20% may be agreed

TABLE III.2 — Permissible deviations in the product analysis in relation to the limit values applicable for the ladle analysis

Element

C

Si

Mn

Pand S

Cr, Ni, Mo and Cu

Steel grade

3 CD 53 to 3 CD 55

3 CD 58 to 3 CD 95

All steel grades

All steel grades

All steel grades

All steel grades

Permissible deviation in the product

analysis (')

±0 .03( 2 )

±0 .04( 2 )

±0.03

±0.04

+ 0.005

-

( ') The deviations relate to the values in Table III. 1 except for the case specified in note (2). In a cast the deviation shown by an element in the product analysis may only be below the minimum value or above the maximum value of the range given for the ladle analysis, but never the two at once. For the elements defined by a maximum content, the permissible deviation relates to this maximum.

(2) The permissible deviations relate to the actual ladle analysis indicated in the inspection certificate, or, where appropriate, the test report.

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Page 14

TABLE III.3 — Limit values for depth of cracks corresponding to the inspection of the ends

1 1)

OP

OS

1) 7

n 6

OS

0 4

Π 1

m

0 I

^ ' 'Å

*>' ^' «̂

** «^ - ^

x*

mm

0 5 10 20 30 40 50 60 70 80 90 100 110 120

Diameter

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Page 15

TABLE III.4 - Limit values for depth of total decarburization (partial and complete) corresponding to the inspection of the ends

-υ —

ε

ι η

0 9

0 8

0 7

0.6

os

0.4

0 t

η Ί

0 1

mm

Λ'

>'

10 15 20 25 30 35 40 45 50 55 60

Diameter

Page 16: cold drawing

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EURONORMS are on sale at: United Kingdom: British Standards Institution, 2 Park Street, London W1A 2BS Ireland: Institute for Industrial Research and Standards, Ballymun Road, Dublin 9 Denmark: Dansk Standardiseringsrad. Aurehøjvej 12, Postboks 77, DK-2900 Hellerup Greece: ELOT — Hellenic Organization for Standardization, Didotou 15, Athens 144


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