S44500 - ASTM A240/A240M-2020

USA UNS	S44500
Corresponding Standard	ASTM A240/A240M-2020 Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels and General Applications
Classification	Ferritic Stainless Steel
Properties	Corrosion Resistance

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	N	More
Minimum Value	-	-	-	-	-	19	-	0.3	-	Nb:10×(C+N) ~ 0.80
Maximum Value	0.02	1	1	0.04	0.012	21	0.6	0.6	0.03	Nb:10×(C+N) ~ 0.80

Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
≥427	≥205	≥22	HRBW ≤83

Approximate Comparison Table Ferritic Stainless Steel

United States	International Organization for Standardization		European Standard
UNS	ISO	Numerical Grade	Numerical Grade
S44500	X2CrNbCu21	4621-445-00-E	(1.4621)

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