Grade F20 N08020 Type Alloy 20 - ASTM A965/A965M-2025

Grade	Grade F20
USA UNS	N08020
Other Names
Corresponding Standard	ASTM A965/A965M-2025 Standard Specification for Steel Forgings, Austenitic, for Pressure and High Temperature Parts
Classification	Austenitic Stainless Steel

Grade F20 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	More
Minimum Value	-	-	-	-	-	19	32	3	2	Nb：8×C~1.00
Maximum Value	0.07	1	2	0.045	0.035	21	38	4	3	Nb：8×C~1.00

Grade F20 Mechanical Properties

Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
≥550	≥240	≥30	≥50

1 Approximate Comparison Table Corrosion-Resistant Alloy

2 Approximate Comparison Table Austenitic Stainless Steel

United States	International Organization for Standardization		European Standard
UNS	ISO	Numerical Grade	Numerical Grade
N08020	X4NiCrCuMo35-20-4-3	4657-080-20-U	(1.4657)

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