information on pwht effects on 321 stst overlay
information on pwht effects on 321 stst overlay
(OP)
we have been asked to supply a vessel 70mm thick in 1501 490b lt50 carbon steel c/w 321 stainless steel overlay on the bottom dish.
will the pwht of the vessel affect the 321 properties?
will the pwht of the vessel affect the 321 properties?





RE: information on pwht effects on 321 stst overlay
The 321 grade of stainless steel is stabilized with Ti so you don't readily form the chromium carbides that result in reduced corrosion resistance and sigma phase formation along grain boundaries. Also, the duration and temperature of PWHT is such that little change will occur.
RE: information on pwht effects on 321 stst overlay
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: information on pwht effects on 321 stst overlay
RE: information on pwht effects on 321 stst overlay
I have seen this work out great. Of course I have also seen some disasters. Watch the procedures.
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: information on pwht effects on 321 stst overlay
RE: information on pwht effects on 321 stst overlay