interpass temp
interpass temp
(OP)
If austenetic stainless develops carbide precip at 450C and up, why does my weld data sheet require my interpass temp to be 300F.
This is 304L sch 80 pipe. Gtaw 308L root, Smaw 308L fill and cap.
Thanks
Sftyvlv
This is 304L sch 80 pipe. Gtaw 308L root, Smaw 308L fill and cap.
Thanks
Sftyvlv





RE: interpass temp
To avoid excessive heat input in the weld region. This interpass temperature is typical, and has been proven by expierence to reduce susceptibility to carbide precipitation in 3xx stainless steels during welding.
RE: interpass temp
RE: interpass temp
I'm a red seal pipewelder in Ontario,working at a coal fired power station,and am curious to the "hows" and "whys" of welding metallurgy.
I have ASME section IX,II (all of),B31.1 and 31.3 to referance albeit a few years old.
I find this sight most informative and helpfull.
Thanks
Sftyvlv