A707 Grade L7 Class1 - ASTM A707/A707M-2019 - H2ABC

中文版

Grade	A707 Grade L7 Class1
Corresponding Standard	ASTM A707/A707M-2019 Forged Carbon and Alloy Steel Flanges for Low- Temperature Service
Classification	Alloy Steel

A707 Grade L7 Class1 Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V	Cb	More
熔炼分析	Minimum Value	-	-	-	-	-	-	3.2	-	-	-	-	Cr+Mo+V≤0.32
熔炼分析	Maximum Value	0.2	0.35	0.9	0.025	0.025	0.3	3.7	0.4	0.12	0.05	0.02	Cr+Mo+V≤0.32

	Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V	Cb	More
成品分析	Minimum Value	-	-	-	-	-	-	3.18	-	-	-	-	Cr+Mo+V≤0.32
成品分析	Maximum Value	0.22	0.37	1	0.03	0.035	0.34	3.82	0.43	0.13	0.06	0.03	Cr+Mo+V≤0.32

A707 Grade L7 Class1 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
≥415	≥290	≥22	≥40	149~207	-100°F (-73°C) Average of 3 samples: ≥41 Single sample: ≥33

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