SA336 Grade F21 Class 3 - ASME SA-336/SA-336M-2023

Grade	SA336 Grade F21 Class 3
Corresponding Standard	ASME SA-336/SA-336M-2023 Alloy Steel Forgings for Pressure and High-Temperature Parts
Classification	Alloy Steel

SA336 Grade F21 Class 3 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo
Minimum Value	0.05	-	0.3	-	-	2.7	0.8
Maximum Value	0.15	0.5	0.6	0.025	0.025	3.3	1.06

SA336 Grade F21 Class 3 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
515~690	≥310	≥19	≥40

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