S31803 - ASTM A240/240M-2018

USA UNS	S31803
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	-	-	-	-	-	21	4.5	2.5	0.08
Maximum Value	0.03	1	2	0.03	0.02	23	6.5	3.5	0.2

Mechanical Properties

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

1 Approximate Comparison Table

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

ISC

CNS

JIS

UNS

ISO

Numerical Grade

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

022Cr22Ni5Mo3N
022Cr23Ni5Mo3N

S22253
S22053

329J3L

SUS 329J3L

STS 329J3L

S31803
S32205

X2CrNiMoN 22-5-3

4462-318-03-I

X2CrNiMoN 22-5-3

1.4462

X2CrNiMoN 22-5-3

1.4462

2 Approximate Comparison Table

3 Approximate Comparison Table

China		Japan	United States	International Organization for Standardization		United Kingdom
GB	ISC	JIS	UNS	ISO	Numerical Grade	BS EN/BS
022Cr22Ni5Mo3N (GB/T 39033)	S22253	SUS 329J3L (JIS G4308-2013)	S31803 (ASTM A595-16)	X2CrNiMoN22-5-3 (ISO 15510:2014)	4462-318-03-Ⅰ	X2CrNiMoN22-5-3/1.4462 (BS EN 10083:2014)

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