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  • Users: Ibahaa
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  1. Ibahaa

    PWHT for dissimilar weld joint 9Cr with 310 austenitic SS

    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...

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