PWHT ( Stress Relieves) ASTM A 537 class 1
PWHT ( Stress Relieves) ASTM A 537 class 1
(OP)
Hello, I have a Question :
After we perform PWHT (stress relieve annealing),is there any decrease of tensile strenght of material, if yes ,how many percent decrease? Thanks
Note :
Material : ASTM A-537 class 1, stress relieve temperature @ 595º (ref ASME –III div. 2) :Equipment : Spheical Tank, Thickness :40 mm
After we perform PWHT (stress relieve annealing),is there any decrease of tensile strenght of material, if yes ,how many percent decrease? Thanks
Note :
Material : ASTM A-537 class 1, stress relieve temperature @ 595º (ref ASME –III div. 2) :Equipment : Spheical Tank, Thickness :40 mm





RE: PWHT ( Stress Relieves) ASTM A 537 class 1
Keep in mind, the code only requires the minimum tensile properties are met, and typically the approved material specifications when subjected to sub-critical heat treatments (like PWHT or thermal to remove forming strains), end up still exceeding the minimum requirements.
RE: PWHT ( Stress Relieves) ASTM A 537 class 1
RE: PWHT ( Stress Relieves) ASTM A 537 class 1