Substitution of steels with same P-number in welding
Substitution of steels with same P-number in welding
(OP)
I need to know of resources giving tips and sharing experience on the question of when is it safe to substitute a parent metal with same P-number but a different group number without bringing into question the validity of PQR & WPS. For instance, SA-414 grade C is qualified to be welded to SA 240 type 316L under a certain PQR with GTAW. When can one substitute SA-414 grade G instead of grade C in the same circumstances (grade G is group 2, grade C is group 1, both under P-number 1)? What may be the drawbacks of doing this if any? Thanks.





RE: Substitution of steels with same P-number in welding
one of the materials section would probably get more responses.
RE: Substitution of steels with same P-number in welding
RE: Substitution of steels with same P-number in welding