A537 steel series are heat-treated carbon-manganese-silicon steel sheets for American standard pressure vessels, which are divided into three grades, namely A537 CL1, A537 CL2, and A537CL3 . The maximum thickness of A537 CL1 plate is 100mm, and the maximum thickness of others is 150mm.
A537 CL1, A537 CL2, A537CL3 steel plate executive standard: ASTM A537 /537M-06
Mechanical properties of A537 CL1, A537 CL2, A537CL3 steel plates:
A537 CL1 steel plate: Normalized, yield strength σ0.2 (MPa) ≥ 345, tensile strength σb (MPa) 485-620.
A537 CL2 steel plate: quenched + tempered, yield strength σ0.2 (MPa) ≥ 415, tensile strength σb (MPa) 550-690.
A537CL3 steel plate: quenched + tempered, yield strength σ0.2 (MPa) ≥ 380, tensile strength σb (MPa) 550-690.
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