[MW:1400] Re: Equivalent PWHT

Dear Sanjay,   You can use buttering technique to avoid PWHT after final welding. PWHT can be done for the P1 material after buttering. If you qualify a WPS with buttering this could be the better choice to joint P1 to P8 with heavy thickness.   Sajeev --- On Sun, 12/14/08, sanjay <sanju2705@yahoo.com> wrote: From: sanjay <sanju2705@yahoo.com> Subject: [MW:1398] Equivalent PWHT To: "Materials & Welding" <materials-welding@googlegroups.com> Date: Sunday, December 14, 2008, 3:55 PM Hi Friends, I have a dissimilar material joint of P1 to P8, having PWHT. Thickness of the joint is 75mm. As per UCS 56, we can perform PWHT at 620 Deg C for 135minutes, but that will sensitise P8 material. So we want to perform PWHT at 435 Deg C. Please advice the duration of PWHT and how to arrive at that duration. Regards. Sanjay Jain

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