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I want to know the temperature profile of post weld heat treatment for alloy steel like P5, P9. We have some procedures that was used from a long time. I want to know the source or reference of the temperature range. Please suggest the maximum temperature, holding time, temperature raising rate, cooling rate.
24/11/2011 A: Jignesh Patel, KNPC, jv.patel@knpc.com
The maximum holding temperature, holding time and rate of heating/cooling for PWHT of alloy steels suchas 5Cr and 9Cr steels is available in ASME Sec VIII Div 1 as well as in ASME B31.3. These codes specify limits on all above parameters.