Test coupon Mechanical Property after PWHT
Test coupon Mechanical Property after PWHT
(OP)
Material: ASTM A352 LCB
Test coupon: 80 mm thickness, Length: 250 mm, width: 125 mm
Heat Treatment: Normalizing 930 Deg C, Quenching 910 Deg C, Tempering 650 Deg C
Mechanical Property: Yield 341.77 MPa, UTS: 506.55 MPa, Impact average 30 Joules at -46 Deg C (required 27 joules).
Simulated PWHT was carried out on test coupon after the above heat treatment NQT at 593 Deg C. Mechanical Property after this
Yield: 298 MPa, UTS: 465 MPa, Impact average 15 Joules at -46 joules
Can u pls tell me the reason for mechanical decrease after PWHT. Please help me.
Test coupon: 80 mm thickness, Length: 250 mm, width: 125 mm
Heat Treatment: Normalizing 930 Deg C, Quenching 910 Deg C, Tempering 650 Deg C
Mechanical Property: Yield 341.77 MPa, UTS: 506.55 MPa, Impact average 30 Joules at -46 Deg C (required 27 joules).
Simulated PWHT was carried out on test coupon after the above heat treatment NQT at 593 Deg C. Mechanical Property after this
Yield: 298 MPa, UTS: 465 MPa, Impact average 15 Joules at -46 joules
Can u pls tell me the reason for mechanical decrease after PWHT. Please help me.





RE: Test coupon Mechanical Property after PWHT
RE: Test coupon Mechanical Property after PWHT
Please advice.
RE: Test coupon Mechanical Property after PWHT
RE: Test coupon Mechanical Property after PWHT
please clarify.
RE: Test coupon Mechanical Property after PWHT
RE: Test coupon Mechanical Property after PWHT
UTS: 485 - 655 MPa
Ys: 275 MPa Min
Impact: Average 20J @ -46 Deg C.
Will it be the same after PWHT also. Please clarify.
RE: Test coupon Mechanical Property after PWHT
"Even,if you are a minority of one, truth is the truth."
Mahatma Gandhi.
RE: Test coupon Mechanical Property after PWHT
Perform the weld procedure qualification, heat treat, tensile and impact test, and evaluate the results. You have to do this regardless.