Dec 6, 2011 #1 aws2004 Nuclear Oct 20, 2011 8 0 0 KW Dear expert, Please I need the help, with the best PWHT for material dissimilar Sa 335 Gr P 91 and Sa 335 Gr P 22. Because I've of the joint for PWHT, Dia: 12" X 25mm / 28" X 33mm. Thanking very you much in advance. Kindest regards. Magalhães Julio
Dear expert, Please I need the help, with the best PWHT for material dissimilar Sa 335 Gr P 91 and Sa 335 Gr P 22. Because I've of the joint for PWHT, Dia: 12" X 25mm / 28" X 33mm. Thanking very you much in advance. Kindest regards. Magalhães Julio
Dec 7, 2011 #2 normet Materials Dec 7, 2011 14 0 0 CA See ASME VIII-1, UW-40(8)(d). You should use the PWHT of the material requiring the higher temperature Upvote 0 Downvote
See ASME VIII-1, UW-40(8)(d). You should use the PWHT of the material requiring the higher temperature
Dec 7, 2011 #3 metengr Materials Oct 2, 2003 15,478 0 0 US First off, this could be under B31.1 Piping Code. I would use a B6 (5Cr) filler metal and perform the PWHT at between 1380 to 1400 deg F. Ideally, the PWHT for the Grade 91 base material is critical and is usally performed at 1400 deg F. Upvote 0 Downvote
First off, this could be under B31.1 Piping Code. I would use a B6 (5Cr) filler metal and perform the PWHT at between 1380 to 1400 deg F. Ideally, the PWHT for the Grade 91 base material is critical and is usally performed at 1400 deg F.