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Up Topic American Welding Society Services / Certifications / WPS base metal qualification
- - By AdamG Date 12-26-2013 21:34
Hello all,
  Im new here and have a technical question i was hoping someone could help with.
we just ran a bi-metal PQR last week with all good results. A-36 to 316L welded with E309LT-1 FCAW. Now to write the WPS. the question has been brought up,
what all base metal combinations does this qualify for. Not finding to much on P-1 to P-8 base metal ranges in sec IX. any help would be appreciated.
Parent - - By 803056 (*****) Date 12-26-2013 21:40
ASME Section IX, Article 4, Table QW-451.2

The answer you seek is in the table Little Grasshopper.

Al
Parent - - By 46.00 (****) Date 12-26-2013 23:18
?
Parent - - By 803056 (*****) Date 12-27-2013 00:13
Maybe I misunderstood the question. I took it to mean thickness, but maybe he is asking what P-1 to what P-8 is acceptable.

If that is the case, any P-1 to ay P-8 using the same filler metal.

Section IX doesn't consider corrosion or whether the combination is the best choice for a particular application.

Al
Parent - - By AdamG Date 12-27-2013 12:41
Thanks for your help. Thickness is no problem, any p-1 to any p-8 no problem, but my question is, what else can this cover?
does this also qualify p-8 to p-8 with a filler with the same f-no?
as a welder ive had to take this test several times thru out the years, and was told that it could be used for SS and carbon seprately.
but now being on the other side, as the guy who has to make sure all this stuff is correct, i want to be sure about what Im talking about.
and maybe not have to run another PQR for p-8 to p-8.

Adam
Parent - - By 46.00 (****) Date 12-27-2013 13:10
Have a look at QW-423 and QW-424
Parent - - By AdamG Date 12-27-2013 15:06 Edited 12-27-2013 15:32
Thanks 46.00, thats the same place i ended up also.. i guess my confusion was welder qualification and procedure qualification..
trying to get to much from too little.. we will run a separate procedure all by its self. i was also looking at QW-403.5, any thoughts on this?

23 years welding, pipefitting.... 1st year CWI  its like starting all over sometimes!

Adam
Parent - - By 803056 (*****) Date 12-27-2013 20:31
It is easy to confuse procedure qualification with welder qualification.

The range the welder is qualified to weld is quite expansive. That isn't the case with procedure qualification. The WPS is limited to the combination that is welded, i.e., P-1 to P-8.

Al
Parent - - By AdamG Date 12-27-2013 21:19
I must say thank you for not just giving out the answer, but rather guiding in the right direction. theres more retention that way.

Adam
Parent - By 46.00 (****) Date 12-29-2013 06:20
Just to reiterate what Al has stated and only because I have made this mistake in the past and probably will do in the future, be aware of the requirements of Welder Qualification and Procedure Qualification! It will be ready in the back ground to catch you out at some point!
Up Topic American Welding Society Services / Certifications / WPS base metal qualification

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