A182 F6a Class 4 allowable stress
A182 F6a Class 4 allowable stress
(OP)
Looking at ASME Section II Table 1A it only has allowable stresses for A182 F6a for Class 1 and 2. Can anybody point me to an allowable stress vs Temperature table for the Class 4 condition?
I need the allowable stress at 1070°F
I need the allowable stress at 1070°F





RE: A182 F6a Class 4 allowable stress
Why do you need ASME B&PV Code allowable stress values? What is your application?
RE: A182 F6a Class 4 allowable stress
RE: A182 F6a Class 4 allowable stress
Keep in mind, that a change in material from an austenitic stainless steel (specified by the customer) to a martensitic stainless steel requires very careful consideration for valve service because of the differences in linear coefficient of expansion (clearance issues) and creep deformation differences between the two grades of stainless. In lieu of 316H, I would use 321H to take advantage of higher allowable stress values in comparison to 316H.