2304 S32304 - ASTM A240/A240M-2020

Grade	2304
USA UNS	S32304
Corresponding Standard	ASTM A240/A240M-2020 Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels and General Applications
Classification	Duplex Stainless Steel
Properties	Corrosion Resistance

2304 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	More
Minimum Value	-	-	-	-	-	21.5	3	0.05	0.05	0.05	PREN: 25~28
Maximum Value	0.03	1	2.5	0.04	0.03	24.5	5.5	0.6	0.6	0.2	PREN: 25~28

2304 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
≥600	≥400	≥25	≤290

1 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

China		United States		International Organization for Standardization	European Standard
GB	ISC	ASTM	UNS	ISO	EN	Numerical Grade
022Cr23Ni4MoCuN	S23043	2304	S32304	X2CrNiN 23-4	X2CrNiN 23-4	1.4362

2 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

3 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

China		United States		International Organization for Standardization		United Kingdom
GB	ISC	AISI	UNS	ISO	Numerical Grade	BS EN/BS
022Cr23Ni4MoCuN (GB/T 39033)	S23043	2304	S32304 (ASTM A595-16)	X2CrNiN23-4 (ISO 15510:2014)	4362-323-04-Ⅰ	X2CrNiN23-4/1.4362 (BS EN 10083:2014)

2304 Corresponding Standards(Same grade name, different standards)

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