S81921 - ASTM A240/240M-2018

USA UNS	S81921
Corresponding Standard	ASTM A240/240M-2018 Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels and General Applications
Classification	Duplex Stainless Steel
Properties	Corrosion Resistance

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	N
Minimum Value	-	-	2	-	-	19	2	1	0.14
Maximum Value	0.03	1	4	0.04	0.03	22	4	2	0.2

Mechanical Properties

condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
Thick plates, thin plates, strip products	≥620	≥450	≥25	HBW: ≤293 HRC: ≤31

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