Stainless Steels
Stainless Steels
(OP)
Is there any document / code stating why material hardness testing is not required after welding stainless steel pipe, such as 316 and duplex? Or is it required by some codes and not others.
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RE: Stainless Steels
Regarding Codes and Standards, there typically is no hardness testing required after welding because from a code standpoint austenitic grades and certain duplex grades of stainless steel do not harden from thermal treatment.