SA453 Grade 662 Class A - ASME SA-453/SA-453M - H2ABC

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Grade	SA453 Grade 662 Class A
Corresponding Standard	ASME SA-453/SA-453M Specification for bolting materials, High- Temperature, 50 to120 ksi [345 to 827 MPa] yield strength with expansion coefficients comparable to Austenitic Steel
Classification	Precipitation-Hardening Stainless Steel

SA453 Grade 662 Class A Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	Ti	B	Al
Minimum Value	-	0.4	0.4	-	-	12	24	-	2	1.8	0.001	-
Maximum Value	0.08	1	1	0.04	0.03	15	28	0.5	3.5	2.1	0.01	0.35

SA453 Grade 662 Class A Mechanical Properties

diameter d mm	Test Temperature	Mark	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
All specifications	Room Temperature	Gr 662 Class A	≥895	≥585	≥15	≥18	HBW: 255~321； HRB: ≥100①； HRC: ≤35②
All specifications			≥100h, Endurance Strength: ≥380		≥5

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