UNS S32750 Super Duplex Stainless Steel
Introduction
Overview of UNS S32750 Super Duplex Stainless Steel
Grade UNS S32750 is a super duplex stainless steel that combines the advantageous properties of both ferritic and austenitic steels. Also known as W.Nr. 1.4410, this duplex stainless steel offers greater strength and corrosion resistance compared to S32205. It shows enhanced resistance to corrosion from dilute sulfuric acid combined with chloride ions compared to 904L stainless steel. Additionally, it has a higher yield strength but lower ductility than austenitic stainless steels.
UNS S32750 super duplex steel boasts excellent impact strength; however, it is not recommended for use at temperatures exceeding 570 °F (300 °C), as prolonged exposure can decrease its toughness. This alloy is available in various standard mill forms, including pipes, rods, bars, plates, sheets, strips, and foils.
Futures of UNS S32750 Super Duplex Stainless Steel
Combines most desirable characteristics of both super-ferritic and Super-Austenitic steel. Has excellent resistance to chloride SCC, pitting, crevice and general corrosion and carbide related inter-granular corrosion. Possesses high strength & impact strength.

UNS S32750 Super Duplex Stainless Steel Applications
- It is widely used in oil & gas, hydropower, pressure vessels, pulp & paper, structural components and chemical tankers.
UNS S32750 Super Duplex Stainless Steel Tags
- Grade 2507
- 1.4410
- UNS S32750
Quality Products
Technical Data
ASTM/AISI | WERKSTOFF NR. | UNS | GOST | GB | JIS | DIN | EN | OR |
S32750 (2507) | 1.4410 | S32750 | – | 022Cr25Ni7Mo4N | – | – | – | – |
Grade | Standard | C | Si | Mn | P | S | Cr | Ni | Mo |
S32750 | ASTM A240 | ≤0.03 | ≤0.80 | ≤1.20 | ≤0.035 | ≤0.020 | 24.00-26.00 | 6.00-8.00 | 3-5 |
Density | Melting Range | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
7.8 g/cm3 | 1350°C/2460°F | ≥795Mpa | ≥550Mpa | ≥15% |
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