PWHTing alloy 4130 to P-1 materials
PWHTing alloy 4130 to P-1 materials
(OP)
In accordance with ASME B31.3, is a PWHT temperature of 1150 +/- 50, acceptable. you wouldn't want to take the CS to 1300-1375, would you ?
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PWHTing alloy 4130 to P-1 materials
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RE: PWHTing alloy 4130 to P-1 materials
No. For P-No 1 base material (CS), the minimum PWHT temperature is 1100 deg F. You do not want to exceed the lower transformation temperature for P-No 1 material which is 1300 deg F or higher.
RE: PWHTing alloy 4130 to P-1 materials
RE: PWHTing alloy 4130 to P-1 materials
If you have B31.1 look at 129.3.2 for published lower critical transformation temepratures. For B31.3 look at table 331.1.1 for heat treatment, which would apply for forming and post weld heat treatment. This is all you need to help you.
RE: PWHTing alloy 4130 to P-1 materials
RE: PWHTing alloy 4130 to P-1 materials
RE: PWHTing alloy 4130 to P-1 materials