SA387 Gr12 CL12 Tensile strength out of standard
SA387 Gr12 CL12 Tensile strength out of standard
(OP)
Dear All,
I have one question need your support:
for material SA387 Gr12 CL12, Tensile strength specified in ASME II-A is 450~585 MPa.
in case actual tensile strength is 620MPa, others properties incl. Yield strength, impact test value, hardness can meet standard requirement, the material can be acceptable? can we re-do heat treatment to reduce tensile strength to 450~585 MPa?
Thanks!
I have one question need your support:
for material SA387 Gr12 CL12, Tensile strength specified in ASME II-A is 450~585 MPa.
in case actual tensile strength is 620MPa, others properties incl. Yield strength, impact test value, hardness can meet standard requirement, the material can be acceptable? can we re-do heat treatment to reduce tensile strength to 450~585 MPa?
Thanks!





RE: SA387 Gr12 CL12 Tensile strength out of standard
I would temper at 1175 deg F to 1200 deg F.
RE: SA387 Gr12 CL12 Tensile strength out of standard
correct, the material delivery condition is N+T.
in case Rm is higher than ASME code(450~585 MPa), i.e. Rm is 620MPa, acc. to your experience, can we accept on deviation? what's the impact on equipment manufacture, welding and operation?
thanks!
RE: SA387 Gr12 CL12 Tensile strength out of standard
RE: SA387 Gr12 CL12 Tensile strength out of standard