asme ix
asme ix
(OP)
dear all.
can u help me.
I can't understand what is the definition of upper and lower transformation from asme ix, which code can I get this to verify if my PWHT is on upper transformation or lower, how can I determine.
thanks
can u help me.
I can't understand what is the definition of upper and lower transformation from asme ix, which code can I get this to verify if my PWHT is on upper transformation or lower, how can I determine.
thanks





RE: asme ix
ASME Section IX does not define what the temperatures should be it only gives guidance on when you exceed the lower and upper transformation temperatures what is required for procedure qualification because you altered the original mechanical properties of the steel.
You can find lower transformation temperatures in literature or using ASME B31.1 piping code. For upper transformation temperatures you need to either use literature or there are equations that can be used.
RE: asme ix