A350 Grade LF6 Class 1 LF6 - ASTM A350/A350M-2018 - H2ABC

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Grade	A350 Grade LF6 Class 1
Other Names
Corresponding Standard	ASTM A350/A350M-2018 Standard Specification for Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components
Classification	Alloy Steel

A350 Grade LF6 Class 1 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	V	Nb ^*	More
Minimum Value	-	0.15	1.15	-	-	-	-	-	-	0.01	0.04	-	Cu+Ni+Cr+V+Mo≤ 1.00；Cr+Mo≤ 0.32
Maximum Value	0.22	0.3	1.5	0.025	0.025	0.3	0.4	0.4	0.12	0.03	0.11	0.02	Cu+Ni+Cr+V+Mo≤ 1.00；Cr+Mo≤ 0.32

A350 Grade LF6 Class 1 Mechanical Properties

condition	Heat Treatment or Condition	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
Forging	Heat Treatment	455~630	≥360	≥22	≥40	≤197
Low Temperature -51°C							≥20

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