welding P1 to P4
welding P1 to P4
(OP)
I am looking for input on the welding of carbon(P1) to P11 chrome(P4)?
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RE: welding P1 to P4
It is done on regular basis. Shops have weld procedures to do this on pressure vessels and piping. The requirements for pwht will vary depending on which code, sizes, thickness, etc. If this is on code equipment or piping, then you will likely need to document WPS, qualify PQR and qualify your welder WPQ.
RE: welding P1 to P4
RE: welding P1 to P4
RE: welding P1 to P4
SFA 5.18 ER70S-2 through 6
or (lower temperature service, and the strength matches the P1 base metal strength)
SFA 5.28 ER80S-B2 (higher temperature service, and the strength and corrosion resistance are a match to P4 base material) or even ER80S-D2 or E90S-D2 (where you have even higher strength).