Super Duplex Stainless Steel UNS S32750 (2507) is a high-strength, corrosion-resistant alloy ideal for demanding applications in marine, offshore, and chemical industries.
Product Introduction – Super Duplex Stainless Steel UNS S32750 (2507)
Super Duplex Stainless Steel, particularly grade UNS S32750 (commonly known as 2507), is a high-performance alloy with a dual-phase microstructure consisting of approximately equal proportions of austenite and ferrite. This balanced structure offers exceptional strength and outstanding corrosion resistance, making it highly suitable for demanding industrial applications.
UNS S32750 Main Features
| Property |
Description |
| Microstructure |
50% Austenite / 50% Ferrite (duplex structure) |
| Tensile Strength |
≥ 800 MPa |
| Yield Strength (0.2% Proof) |
≥ 550 MPa |
| Elongation |
≥ 25% |
| Hardness |
≤ 32 HRC |
| PREN (Pitting Resistance) |
> 40 (excellent pitting resistance in chloride environments) |
Highly resistant to pitting, crevice corrosion, and stress corrosion cracking, especially in chloride-containing environments (seawater, brine).
High Mechanical Strength: Almost twice the yield strength of standard austenitic stainless steels like 316L.
Good Weldability: Suitable for TIG, MIG, and SMAW methods with proper control of heat input and filler materials.
Cost-Effective for Long-Term Use: Long service life reduces maintenance and replacement costs.
Offshore oil & gas platforms and subsea equipment
Heat exchangers, pressure vessels, and desalination plants
Marine engineering component
Pulp & paper industry equipment
Chemical processing and storage tanks
High-pressure piping and fittings
Available Forms
Pipes & Tubes (seamless and welded)
Pipes: seamless pipes, welded pipes, heat exchange tubes
Plate: hot-rolled plate, cold-rolled plate
Bars: round bars, square bars
Flanges, forgings, accessories: elbows, tees, reducers, etc.
Super duplex stainless steel has become the preferred material for harsh working conditions due to its excellent corrosion resistance, high strength and stable welding performance. As a high-quality UNS S32750 manufacturer in China, we can provide customers with flexible services such as custom drawings, small batch proofing, and bulk export, and widely support high-end markets such as global petrochemicals and offshore engineering.
