A723 Grade 3 Class 2a - ASTM A723/A723M-2018(R2023)

Grade	A723 Grade 3 Class 2a
Corresponding Standard	ASTM A723/A723M-2018(R2023) Standard Specification for Alloy Steel Forgings for High-Strength Pressure Component Application
Classification	Alloy Steel

A723 Grade 3 Class 2a Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	V
Minimum Value	-	-	-	-	-	0.8	3.3	0.4	-
Maximum Value	0.4	0.35	0.9	0.015	0.015	2	4.5	0.8	0.2

A723 Grade 3 Class 2a Mechanical Properties

Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Impact Energy Absorption KV2 J
≥1000	≥895	≥13.5	≥13	（4.5℃） ≥38

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