Thanks for your responce
Finally the correct action to weld using inconil electrode followed by PWHT.
But what is your idea about the decrease of Cr percentage in the SS after PWHT.
hello all,
I meet a case with dissimilar weld joint 9Cr with 310 austenitic SS
I found two approved WPS as follow:
• WPS no.1 filler metal is NiCr-3 with no PWHT (which mean the residual stress in the 9cr will not be eliminated).
• WPS no.2 filler metal is NiCr-3 but PWHT is required (which...