S31500 - ASTM A949/A949M-2001(R2019)

USA UNS	S31500
Corresponding Standard	ASTM A949/A949M-2001(R2019) Standard Specification for Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe
Classification	Duplex Stainless Steel

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	N
Minimum Value	-	1.4	1.2	-	-	18	4.3	2.5	0.05
Maximum Value	0.03	2	2	0.03	0.02	19	5.2	3	0.1

Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
≥635	≥440	≥30	HB：≤290 HRC：≤30.5

1 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

2 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

United States	International Organization for Standardization		European Standard
UNS	ISO	Numerical Grade	Numerical Grade
S31500	X2CrNiMoSiMnN19-5-3-2-2	4424-315-00-I	1.4424

3 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

China		United States	International Organization for Standardization		United Kingdom
GB	ISC	UNS	ISO	Numerical Grade	BS EN/BS
022Cr19Ni5Mo3Si2N (GB/T 39033)	S21953	S31500 (ASTM A595-16)	X2CrNiMoSiMnN19-5-3-2-2 (ISO 15510:2014)	4424-315-00-Ⅰ	X2CrNiMoSi18-5-3/1.4424 (BS EN 10083:2014)

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