SS welding post weld or not?

[m56corrod]

Hello All
We have problem about stainless steel welding regarding weld decay and knife line attack due to carbide formation and Cr depletion, while we have no post welding treatment in Stainless Steels WPS!!! Who can advise me?

 

[pradipgoswami]

-What's the grade being welded?
-What's the nominal composition of the base metal as per the MTR, especially "C" and "Cr"
-What's the welding process, and welding consumables used?
-What's the Interpass Temperature maintained during welding and heat input applied?

Appreciate your response.


Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario, Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299

 

[stanweld]

The only PWHT that will eliminate your problem is solution annealing. There are a number of measures to mitigate sensitization; e.g., selection of low carbon grades, extra low carbon grades, Ti/Nb stabilized grades, rapid cooling techniques. Additionally provide answer Pradip's questions.

 

[m56corrod]

Many thanks to you Mr. pradipgoswami & stanweld