PWHT heating and cooling rate
PWHT heating and cooling rate
(OP)
Hello, all.
I would like to know if there is any standard that specify for heating or cooling rate for the PWHT (stress relief, more exactly). I have checked the EN ISO 13480-4 but I found out only the temperature range and the soak time.
I saw in some articles on internet that the heating and cooling rate should be between 50-100degree C, but I want an exactly number.
Thank you.
Best regards.
I would like to know if there is any standard that specify for heating or cooling rate for the PWHT (stress relief, more exactly). I have checked the EN ISO 13480-4 but I found out only the temperature range and the soak time.
I saw in some articles on internet that the heating and cooling rate should be between 50-100degree C, but I want an exactly number.
Thank you.
Best regards.





RE: PWHT heating and cooling rate
Typically, the heating rate is less than 600 deg F (315 deg C)/hr and 400 deg F (204 deg C)/hr for cooling for PWHT. Components thicker than 50mm should be the above rates divided by largest section thickness.
RE: PWHT heating and cooling rate
"Nobody expects the Spanish Inquisition!"