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Up Topic American Welding Society Services / Certifications / ASME Performance Qualification Test
- - By gyadon (**) Date 10-08-2004 20:57
If a welder performs a 6G test using P-1 material 2" Sch .436 using ER70s-2 GTAW for root and hot pass without backing gas. Fill and cap with E7018 SMAW. Would he/she be qualified to weld P-5B to P-5B material using ER 90S-B9 GTAW root and hot pass with backing gas? Fill and cap with E9015-B9? Please give ASME Section IV referance. I am sure I have read over it. Thank You
Gary
Parent - By dlmann (**) Date 10-09-2004 11:13
I do not have my code book with me right now but I will when I come back in to work tonight. Look at the GTAW procedure and performance variable for backing gas. I have a cheatsheet that says look at QW-408.5

Regards dlmann
Parent - - By chall (***) Date 10-09-2004 16:23
The answer is yes (assuming the base metal thickness and diameter of the production weld is within the limits established by the performance test). Refer to QW-356 for GTAW and QW-353 for SMAW.

The P number for welder qualification is an essential variable (QW-403.18), however a test performed on P1 does qualify the welder for a variety of base metals, including P5B.

The F number is essential (QW-404.15). In your situation, the F number for ER70S-2 and ER90S-B9 is the same (F4), as is the F number for E7018 and E9015-B9 (F6).

The fact that the perfomance test was performed without backing gas means that the essential variable related to gas is not applicable in your situation (QW-408.8). It is only applicable if you test with gas and wish to delete backing gas in production (not allowed). You are allowed to add backing gas if you test without it.

Charles Hall
Parent - - By pipewelder_1999 (****) Date 10-09-2004 19:55
Caught a typo

The F number is essential (QW-404.15). In your situation, the F number for ER70S-2 and ER90S-B9 is the same ****(F6)****, as is the F number for E7018 and E9015-B9 (****F4***).
Parent - By chall (***) Date 10-11-2004 12:47
One of the good things about this site it all the QC oversite.

It's good to have someone check your work.

Charles
Parent - - By dlmann (**) Date 10-09-2004 23:30
Good call on the base metals and filler metals (minus typo).

QW-408.5 The deletion of inert backing is an essiential variable.

Regards dlmann
Parent - By gyadon (**) Date 10-11-2004 17:00
Thanks for the info.
Gary
Up Topic American Welding Society Services / Certifications / ASME Performance Qualification Test

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