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Home Material ASME SA-789/SA-789M-2023
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Grade 2507
S32750
Corresponding Standard ASME SA-789/SA-789M-2023
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
2507 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
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*
* For tubing less than 0.354 in. [9.00 mm] in inside diameter and for tubing less than 0.065 in. [1.65 mm] in wall thickness, it is permissible to use the Vickers hardness test in lieu of the Brinell or Rockwell methods.
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
United States France European Standard Sweden
UNS NF EN/NF EN Numerical Grade SS
S32750 Z3CND25-06Az X2CrNiMoN25-7-4 1.4410 2328
3 Approximate Comparison Table Austenitic-Ferritic Stainless Steel
China Japan United States Germany European Standard
GB JIS UNS DIN EN/DIN W-Nr. EN Numerical Grade
00Cr23Ni7Mo3.5WCuN SUS329J2L S32750
S32760 		X2CrNiMoCuWN25-7-4 1.4501 X2CrNiMoCuWN25-7-4 1.4501
4 Approximate Comparison Table Austenitic-Ferritic Stainless Steel
China United States Germany
GB Commercial Grade UNS W-Nr.
2507 F53 S32750 1.4410
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)
1 ASTM A959-2004
2507 S32750
2 ASTM A240/240M-2018
2507 S32750
3 GB /T 21833-2008
2507 022Cr25Ni7Mo4N S25073 (00Cr25Ni7Mo4N)
4 ASTM A1082/A1082M-2016
2507 S32750
5 ASTM A554-2016
2507 S32750
6 ASTM A240/A240M-2020
2507 S32750
7 ASTM A959-2019
2507 S32750
8 ASTM A789/A789M-2024
2507 S32750
9 ASTM A790/A790M-2024
2507 S32750
10 ASME SA-789/SA-789M-2023
2507 S32750

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