2507 S32750 - ASTM A789/A789M-2024

Grade	2507
USA UNS	S32750
Corresponding Standard	ASTM A789/A789M-2024 Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
Classification	Duplex Stainless Steel
Properties	Corrosion Resistance

2507 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	More
Minimum Value	-	-	-	-	-	24	6	-	3	0.24	Cr+3.3Mo+16N≥41
Maximum Value	0.03	0.8	1.2	0.035	0.02	26	8	0.5	5	0.32	Cr+3.3Mo+16N≥41

2507 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
Tube	Solution treatment at 1025~1125°C, quick quenching using water or other methods	≥800	≥550	≥15	HBW: ≤300 HRC: ≤32 HV: ≤300*

1 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

China		Japan	United States		International Organization for Standardization		Germany		European Standard
GB	ISC	JIS	ASTM	UNS	ISO	Numerical Grade	DIN EN/DIN	W-Nr.	EN	Numerical Grade
022Cr25Ni7Mo4N	S25073	UR 47N+	2507	S32750	X2CrNiMoN25-7-4	4410-327-50-E	X2CrNiMoN25-7-4	1.4410	X2CrNiMoN25-7-4	1.4410

2 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

3 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

4 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

5 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
022Cr25Ni7Mo4N (GB/T 39033)	S25073	2507	S32750 (ASTM A595-16)	X2CrNiMoN25-7-4 (ISO 15510:2014)	4410-327-50-E	X2CrNiMoN25-7-4/1.4410 (BS EN 10088-3:2014)

2507 Corresponding Standards(Same grade name, different standards)

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