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Themban Nickel Alloys is a leading manufacturer of Super Duplex Steel Fasteners S32750 in Cape Town , South Africa. Our S32750 fasteners are designed for exceptional strength and high corrosion resistance, making them ideal for harsh environments. They provide outstanding performance in high-stress applications in the oil, gas, and marine chemical industries. At Themban Nickel Alloys, we are committed to providing high quality fasteners that meet stringent industry standards. Our advanced manufacturing processes ensure that each fastener delivers reliability and durability, positioning us as a trusted source for customers in South Africa and beyond. Whether for subsea equipment, marine infrastructure, or chemical processing systems, our Super Duplex Steel Fastener S32750 offers unparalleled performance and longevity.
| Specification | IS, BS, ASTM, ASME |
| Grade | Super Duplex Steel | UNS S32750 | S32760 |
| Standard | ASTM A479 ASME SA479 |
| Length | 3mm to 200mm |
| Form | Screw, Nuts, Bolts, Washers |
| Size | 3/6″ to 2″, M3 – M56, Custom Sizes |
| Application | Oil & Gas, Heat exchanger and condenser, Automobile Industry, Engineering, Power plants, Refineries & Petrochemicals, Ship building, Desalination Plants |
| Phosphorus | Sulphur | Silicon | Carbon | Manganese | Nickel | Molybdenum | Nitrogen | Copper | Chromium |
|---|---|---|---|---|---|---|---|---|---|
| 0.035 % max | 0.02 % max | 0.80 % max | 0.03% Max | 1.20 % max | 6.00 – 8.00 % | 3.00 – 5.00 % | 0.24 – 0.32 % | 0.50 % max | 24.0 – 26.0 % |
| Element | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S32750 | 7.8 | 0.281 | 1350 | 2460 |
The Super Duplex Steel Fasteners S32750 from Themba Nickel Alloys boast a well-balanced microstructure, consisting of about 50% austenite and 50% ferrite, and are enriched with chromium (24–25%), nickel (6–7%), and molybdenum (3–5%). This unique composition grants them excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. These fasteners also showcase impressive tensile strength (850–950 MPa) and yield strength (550–650 MPa), all while maintaining outstanding toughness, impact resistance, and long-lasting durability. These qualities ensure that they provide secure and reliable fastening, even in high-temperature, high-pressure, and chloride-rich environments.
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Super Duplex Steel Fasteners S32750 are widely utilized in scenarios where corrosion resistance, strength, and reliability are paramount. They’re perfect for chemical and petrochemical plants, oil and gas pipelines, offshore platforms, desalination systems, and marine engineering projects. These fasteners guarantee safe, leak-proof, and enduring connections in aggressive environments, making Themba Nickel Alloys’ Super Duplex Steel Fasteners S32750 the go-to choice for critical industrial infrastructure and demanding operational conditions around the globe.
