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Up Topic American Welding Society Services / Technical Standards & Publications / Unlisted base material
- - By castle (*) Date 06-26-2007 17:56
Gentleman, according to D1.1 if I weld two unlisted base metals togther,  I'm restricted to
weld that specific base metal combination listed in the PQR. Does that mean for example:

PQR= 4130 to 8630M

Combination allowed:
4130 to 8630M
4130 to 4130
8630M to 8630M

Or, is the PQR just good for 4130 to 8630M, since the word "combination" used in Table 4.8
for Unlisted to Unlisted is singular in meaning. In other words, if it had stated
"combinations", then would the PQR be allowed the three different combinations listed above?
Parent - By hogan (****) Date 06-26-2007 18:21
i believe that it would be just for the combo. not 4130 to itself or 8630 to itself
Parent - - By rickc (**) Date 06-26-2007 20:17
By my reading you're locked into "the Specific Combination of Steels listed on the PQR" or 4130 to 8630M only.
Parent - - By Milton Gravitt (***) Date 06-27-2007 01:52
I'm not a CWI or an inspector but I though if you had different groups like A & B and you took the qualification in the B group in that group of materials you are qualified in the A & B groups. 4130 & 8630 are in the same group IB.  That the way I see it but like I said I'm no CWI. But I know that there are folks on this forum that is.
Parent - - By ssbn727 (*****) Date 06-27-2007 02:04 Edited 06-27-2007 02:09
Hi Milton!
One must stick to what the AWS D1.1 code says as the minimum requirements to adhere to especially if the contract specs say so - unless overidden by the EOR which would cause concern at the very least especially if there's not even a hint of adherence to the contract specs. One possbile result: Change orders must be written and possible backcharges incurred for potential delays if necessary... In other words, opening a can of worms with a stench like you wo'nt believe!!! Not always the case but, it can get ugly at times!!!

The easy? way out is to qualify the welders to the other combinations and write up separate PQR's in order to cover the other combinations... It's called CYA!!! ;)

Respectfully,
Herny
Parent - - By Milton Gravitt (***) Date 06-27-2007 12:50
Hi ssbn727,
  I know one would have follow the contract specs. What if the contract stated (follow D17.1 code)  would you be certified to weld 4130 to 8630 if you had past RT test and mechanical test or DT on 4130 in the IB group. 
Parent - - By ssbn727 (*****) Date 06-27-2007 18:25
Hi Milton!

I understand your point but, Castle did refer to AWS D1.1 in the initial post so, one must work with the code that is required within the contract specs, and not have the option of replacing one code with another just because in a different code these similar applications are interpreted differently... resulting in differences of how PQR's cover groupings of BM's

Respectfully,
Henry
Parent - - By Milton Gravitt (***) Date 06-28-2007 01:19
I didn't think D17.1 and D1.1 was that much difference until today but they are because I look at the D1.1 and I see where you coming from now. Where I work we are certified by D17.1. Thanks for setting me straight ssbn727.
Parent - - By ssbn727 (*****) Date 06-28-2007 01:54
Hi Milton!

I only hope that I did'nt offend you because if I did as I sometimes do unintentionally of course, I apologize for doing so!!! Keep that mind open as it is, and remain teachable as I try to also ;)
I've read some of your posts Milton and I personally think that you've got a good atitude so, do'nt lose it son! All the best!!!

Respectfully,
Henry
Parent - By castle (*) Date 06-28-2007 13:50
Thanks guys, looks like we will be qualifing two other WPSs.
Parent - By Milton Gravitt (***) Date 06-28-2007 23:31
Know ssbn727 not offend  glade you said it like it is.
Up Topic American Welding Society Services / Technical Standards & Publications / Unlisted base material

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