pwht cycle for welding of Duplex stainless steel.
pwht cycle for welding of Duplex stainless steel.
(OP)
Can anybody help me out.
I have to weld a Duplex stainless steel of P no. 10H .The desing code is ASME B31.3. code only mention that PWHT is required but it does not give PWHT cycle for it.
What cycle i need to follow?
Toughness test is also required in PQR.
I have to weld a Duplex stainless steel of P no. 10H .The desing code is ASME B31.3. code only mention that PWHT is required but it does not give PWHT cycle for it.
What cycle i need to follow?
Toughness test is also required in PQR.





RE: pwht cycle for welding of Duplex stainless steel.
I just checked my ASME B31.3-2008. It says that PWHT is neither required nor prohibited. Thus you have a choice.
I have recently also worked with 10H material where we did not PWHT according to metallurgical recommendations. I would suggest you contact a metallurgical engineer with your specific conditions/requirements.
You could also try post this thread under the Metal and Metallurgy section of Eng-Tips.
RE: pwht cycle for welding of Duplex stainless steel.