NATIONAL CERTIFIED PIPE WELDING BUREAU

WELDING PROCEDURE SPECIFICATION

NO. 8:1-3-1

FOR

GAS TUNGSTEN ARC WELDING (GTAW)

OF

AUSTENITIC STAINLESS STEEL PIPE, VALVES, FITTINGS AND FLANGES

TO

CARBON STEEL PIPE, VALVES, FITTINGS AND FLANGES

USING ER309 FILLER METAL

© NCPWB

This document is the property of

(NCPWB Member Company Name)

This Welding Procedure Specification (WPS) and Procedure Qualification Record(s) (PQR)

are issued by the NCPWB for adoption by its members. Reproduction or

use of this WPS and PQR(s) by anyone other than members of the NCPWB is

prohibited

WELDING PROCEDURE SPECIFICATION (WPS)

Company Name:

WPS Number: 8: 1-3-1 Original WPS Date: 5-5-87 Supporting PQRs: 87805, 87806

Revision Number: 2 Revision Date: 10/1/13

Welding Process: Gas Tungsten Arc (GTAW) Type: Manual

Joints (QW-402)

Joint Design: Single-V or U, Double-V or U, Fillets, Repairs, Build-up Details: See Typical Joint Designs

Backing: Optional Backing Material Type: Carbon Steel, when used

Base Metals (QW-403) Filler Metals (QW-404) Root Balance

P-Number: 8 Group Number: 1, 2 Specification Number (SFA): 5.9 5.9

to P-Number: 1 Group Number: 1, 2 Classification: ER309 ER309

Thickness Range F-number: 6 6

Groove Welds: 1/16” to 2.25” A-Number: 8 8

Fillet Welds: All Maximum Deposited Weld

Pipe Diameter Range Metal Thickness - Groove: 0.652” (including root)

Groove Welds: Over 1” O.D. - Fillet: All All

Fillet Welds: All Maximum Bead Thickness: 1/8” 1/8”

Flux Trade Name: N/A N/A

Consumable Insert: None None

Positions (QW-405) Postweld Heat Treatment Technique (QW-410)

(QW-407)

Welding Positions: All Temp. Range: None String or Weave Bead: Either

Welding Progression: Uphill Time Range: N/A Method of Backgouging: None

Preheat and Interpass Electrical Initial and Interpass Cleaning: Grind to re-

Temperature (QW-406) Characteristics move cutting oxide, solvent clean to remove

(QW-409) cutting oil. Grind and wire brush to remove

Minimum Preheat: 50˚F Current Type: DC slag deposits.

Maximum Interpass: 350˚F* Polarity: Straight Orifice or Gas Cup Size: #4 to #12

Preheat Maintenance: Not Required Amperage: See Table Oscillation: N/A

Gas (QW-408) Electrode Feed Speed: N/A Contact Tube to Work Distance: N/A

Shielding Gas: 100% Argon Voltage: N/A Multiple or Single Pass: Either

Composition: Welding Gr. Travel Speed: See Table Multiple or Single Electrode: N/A

Flow Rate: 8-20 CFH Tungsten Type: 2% Thoria Peening: Not Permitted

Gas Backing: Ar, 5-15 CFH Tungsten Size: 3/32,1/8” Other:

Tracking Shield: None Pulsed Current: None

Weld

Layer

Welding

Process

Filler Metal Current

Volts

Travel

Speed *

(ipm)

Other

Class Dia. (in) Type/

Polarity Amps

*These values are recommended

only, not mandatory

1(S5, 10) GTAW(3/32) As Above 3/32 or 1/8 DCSP 40-60 2-4

1(S40+) GTAW As Above 3/32 or 1/8 DCSP 70-100 2-5

Fill and GTAW As Above 3/32 DCSP 70-170 2-6

Fillets GTAW As Above 1/8 DCSP 70-200 2-8

The undersigned contractor, a member of the National Certified Pipe Welding Bureau, hereby adopts this

jointly developed procedure as its company Welding Procedure Specification and certifies that this

procedure has been qualified as shown on the attached Procedure Qualification Record.

Contractor:

By: Date:

Title:

WPS 8:1-3-1 NCPWB Form QW-482 4/87

Use 3/32” tungsten on Schedule 5 to 10 pipe

For use by NCPWB members only (©NCPWB)

September 20, 2012

Z

Typical Joint Designs Other joint designs shown on Engineering drawings supersede these joint details

Butt welds

Note 1: 1/8 inch maximum except for B31.1 and B31.5 work, 1/16 inch maximum

Fillet, Nozzle and Branch Connection Welds

Socket and Slip-on Flange Welds

T = The nominal thickness of the pipe

X = the lesser of 1.4T or the hub thickness unless another size is shown on the engineering drawings

Y = the lesser of 1.1T or the fitting thickness unless another size is shown on the engineering drawings

Z = for B31.9 work, minimum of the greater of the pipe nominal wall thickness or 1⁄4 in. (6 mm) and face

fillet is not required unless specified by the design.

3/32 to 1/8”

See note 1

30 to 45

3/32 to 1/8”

3/16 Nom. See Note 1

30 to 45

3/32 to 1/8”

1/8” min 45 min

Smaller of T or 1/4”

X

X

1/16” min

1/16” min

Y Y

Approximately

1/16” before

welding

Size (leg)

Dimension

Throat

dimension

1/16” max

For use by NCPWB Members Only (© NCPWB)

PROCEDURE QUALIFICATION RECORD (PQR)

WPS followed during welding of test coupon: 108B021-2.25(IT), Rev 0 Dated 10/6/81 Test Date: 11-24-81

Welding Process(s) used: Gas Tungsten Arc/Shielded Metal Arc Type: Manual

Base Metal Specification: SA-312, Type 316 to Base Metal Specification: SA-333 Grade 6

P-No: 8 Group No: 1 to P-No: 1 Group No: 1 Thickness: 1.125”

Plate: Diameter if pipe: 10” Sch 160 Joint Type: Single V-Groove without backing, 1/8 root opening

Filler Metal Specification: SFA 5.9/SFA 5.4 AWS Classification: ER309/E309-16 F-No.: 6/5

A-No.: 8 Filler Metal Size: 1/8,3/32,1/8,5/32 Supplementary Filler Metal: NA

Weld Metal Deposit Thickness : 0.125/1.0 Maximum Pass Thickness : <1/4”

Preheat Temp (◦F): 70 Interpass Temp (◦F): 350 Welding Position/Progression: 5G Uphill

Tungsten Type/Size: 2% Thoria, 1/8” Current: DC Polarity: SP/RP Travel Speed: NA ipm

Postweld Heat Treatment (◦F): None Heat Treatment Time (Hrs): NA

Shielding Gas Composition : Welding Grade Argon, 20 CFH Backing Gas: Argon, 10-30 CFH

Stringer/Weave Bead: Stringer and Weave Transfer Mode: NA

Oscillation: NA Single/Multi-Pass: Multi Single/Multi-Arc: Single

Layer Process Filler Class Diameter Amperage Travel Speed(ipm) Other

1,2

3,4

5,6

7,8

9,13

GTAW

SMAW

SMAW

SMAW

SMAW

ER309

E309-16

E309-16

E309-16

E309-16

1/8

3/32

1/8

5/32

1/8

80-120

60-110

80-105

130-150

80-130

3-5

1.5-3

1.5-2.5

1.75-3

1.5-3

Reduced Section Tensile Tests

Specimen No. Width/Dia. Thickness Area Ult. Load (lbs) Ult. Stress (psi) Failure Location

5G-1 0.748 1.017 0.761 55,500 72,900 Base Metal

5G-2 0.757 1.007 0.762 56,000 73,500 Base Metal

Guided Bend Tests [ X ] QW-452.2 (Side) [ ] QW-462.3(a) (Trans R&F) [ ]QW-462.3(b)(Long R&F)

Side Acceptable Side Acceptable

Side Acceptable Side Acceptable

Welder’s Name: David Touhey Stamp No. 1B Test Number: 8-7075-D

Welding Witnessed by : Jagdish Gupta Specimens Evaluated by : Twin City Testing and Eng. Lab

We Certify that the statements in this record are correct, and that the test coupons were prepared, welded

and tested in accordance with the requirements of Section IX of the ASME Code.

NATIONAL CERTIFIED

PIPE WELDING BUREAU Contractor:

By: Date:

BY:

Chairman, Technical Committee NCPWB Form QW-483 4/87 PQR Number: 87805

For use by NCPWB members only (©NCPWB)

PROCEDURE QUALIFICATION RECORD (PQR)

WPS followed during welding of test coupon: P8-P1-ST(ap) Test Date: 1-10-83

Welding Process(s) used: Gas Tungsten Arc Type: Manual

Base Metal Specification: SA-312, Type 304 to Base Metal Specification: SA-333 Grade 6

P-No: 8 Group No: 1 to P-No: 1 Group No: 1 Thickness: 0.326”

Plate: Diameter if pipe: 8” Joint Type: Single V-Groove without backing, 1/8 root opening

Filler Metal Specification: SFA 5.9 AWS Classification: ER309 F-No.: 6

A-No.: 8 Filler Metal Size : 3/32,1/8 Supplementary Filler Metal: NA

Weld Metal Deposit Thickness : 0.326 Maximum Pass Thickness : <1/8”

Preheat Temp (◦F): 50 Interpass Temp (◦F): 350 Welding Position/Progression: 6G Uphill

Tungsten Type/Size: 2% Thoria, 1/8” Current: DC Polarity: SP Travel Speed: NA ipm

Postweld Heat Treatment (◦F): None Heat Treatment Time (Hrs): NA

Shielding Gas Composition : Welding Grade Argon, 10-20 CFH Backing Gas: Argon, 5-35 CFH

Stringer/Weave Bead: Stringer and Weave Transfer Mode: NA

Oscillation: NA Single/Multi-Pass: Multi Single/Multi-Arc: Single

Layer Process Filler Class Diameter Amperage Travel Speed(ipm) Other

1

2

3,4

Bal

GTAW

GTAW

GTAW

GTAW

ER309

ER309

ER309

ER309

3/32

3/32

1/8

1/8

40-65

40-65

50-75

65-85

2-4

1-4

1-4

1-4

Reduced Section Tensile Tests

Specimen No. Width/Dia. Thickness Area Ult. Load (lbs) Ult. Stress (psi) Failure Location

T-1 0.741 0.195 0.144 11,500 79,860 Base Metal

T-2 0.740 0.250 0.185 15,200 82,160 Base Metal

Guided Bend Tests [ ] QW-452.2 (Side) [ X ] QW-462.3(a) (Trans R&F) [ ]QW-462.3(b)(Long R&F)

Root No Defects – Acceptable Face No Defects – Acceptable

Root No Defects – Acceptable Face No Defects – Acceptable

Welder’s Name: D. Hodgin Stamp No. 14 Test Number: X03153

Welding Witnessed by : N.W. Seld Specimens Evaluated by : D. Bogart, Valley M.F.I, Portland

We Certify that the statements in this record are correct, and that the test coupons were prepared, welded

and tested in accordance with the requirements of Section IX of the ASME Code.

NATIONAL CERTIFIED

PIPE WELDING BUREAU Contractor:

By: Date:

BY:

Chairman, Technical Committee NCPWB Form QW-483 4/87 PQR Number: 87806

For use by NCPWB members only (©NCPWB)