Impact test for PQR Stainless steel to carbon steel welding
Impact test for PQR Stainless steel to carbon steel welding
(OP)
Hi every body
I have a question about preparing PQR for S.S. 316l to API 5l Gr B and S.S.321 to API 5L Gr B welding.
Does these PQR need to Impact test for accepting welding method?
please let me know according which standard or code I can discern that dissimilar material welding need to impact test or NOT.
Best regard
I have a question about preparing PQR for S.S. 316l to API 5l Gr B and S.S.321 to API 5L Gr B welding.
Does these PQR need to Impact test for accepting welding method?
please let me know according which standard or code I can discern that dissimilar material welding need to impact test or NOT.
Best regard





RE: Impact test for PQR Stainless steel to carbon steel welding
Impact testing requirements are generally based on the code of construction requirements for the above. If the code is silent on impact test requirements, you do not need them. What is your specific application that would require impact testing?
RE: Impact test for PQR Stainless steel to carbon steel welding
according to the ASME B31.3 and operating temperature I can discern that impact test is need for S.S.321 to S.S.321 and S.S.316L to S.S.316L welding but I can't discern for API 5L GrB to S.S. 316L and API 5L GrB to S.S.321 piping system because I don't know exact operating temperature and I don't have access to data base of design.
RE: Impact test for PQR Stainless steel to carbon steel welding
If you are using ASME B31.3 as the code of construction, you will need to have the design condition for the location of the carbon steel to stainless steel dissimilar metal weld, and if this is a pressure boundary weld. If the piping system is stainless steel and the purpose of the carbon steel is for structural hanger attachments, the carbon steel would not be impact qualified, only the filler metal and stainless steel base material (per your OP).
You are going to need more design information regarding the above.
RE: Impact test for PQR Stainless steel to carbon steel welding
If the weld is a fillet weld type that weld a support to a pressure pipe(that operating temperature of piping system is low and need to impact test)and PQR provided on a groove weld,do we need to impact test for accepting PQR?if answer is YES,please tell me according to which code.
Thank you.
RE: Impact test for PQR Stainless steel to carbon steel welding
RE: Impact test for PQR Stainless steel to carbon steel welding
RE: Impact test for PQR Stainless steel to carbon steel welding
could you tell me in which part of B31.3 I can see your preamble. because I want to weld L.T.C.S as support to S.S.321 as pressure pipe.
RE: Impact test for PQR Stainless steel to carbon steel welding
RE: Impact test for PQR Stainless steel to carbon steel welding
Hope this helps