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PWHT of 321 SS

thread178-184586

PWHT of 321 SS

PWHT of 321 SS

(OP)
Hello,

I have recently had a request to prepare a WPS/PQR for welding 321 SS.  My question is at what service temperature would this material require a sensitization PWHT?  For example, the part we are fabricating will never see a service temp over 450 F.

Thanks in advance.

RE: PWHT of 321 SS

Well above 1000 deg F.

RE: PWHT of 321 SS

(OP)
Thanks metengr.

I was given a guideline of 800 F, which sounded a bit low to me, eventhough we're nowhere near 800 F.

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