A668 Class E - ASTM A668/A668M-2021 - H2ABC

中文版

Grade	A668 Class E
Corresponding Standard	ASTM A668/A668M-2021 Standard Specification for Steel Forgings, Carbon and Alloy, for General Industrial Use
Classification	Carbon Steel

A668 Class E Chemical Element Composition Content (%)

Component	Mn	P	S
Minimum Value	-	-	-
Maximum Value	1.35	0.05	0.025

A668 Class E Mechanical Properties

Controlling Cross Section t mm	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
t≤200	Normalizing + Tempering or Double Normalizing + Tempering	≥585	≥305	≥25	≥40	174~217
200<t≤300	Normalizing + Tempering or Double Normalizing + Tempering	≥570	≥295		≥23	≥37	174~217
300<t≤500	Normalizing + Tempering or Double Normalizing + Tempering	≥570	≥295		≥22	≥35	174~217

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