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Okoye Nickel Alloys, based in Kinshasa, Congo, is renowned for providing high-quality Super Duplex Steel Washers. Engineered for exceptional strength and corrosion resistance, these washers are ideal for demanding industrial applications. Combining the best attributes of both duplex and super duplex stainless steels, they offer superior mechanical properties and durability. Okoye Nickel Alloys ensures that each washer meets stringent industry standards, making them a reliable choice for enhancing performance and longevity in various environments.
The Super Duplex steel washer is composed of a combination of approximately 25% chromium, 7% nickel and a small amount of molybdenum, with the rest being steel This alloy provides excellent mechanical properties, including high tensile strength and strength the main corrosion resistance in hardened areas is 450 MPa. Advantages of Super Duplex Steel Washers include exceptional durability, resistance to pitting and crack corrosion, and high strength, making them ideal for demanding applications in the oil and gas and other industries.
| Standard | DIN, ASTM, BS and all International Standards |
| Specifications | ASTM A479 & ASME SA479 |
| UNS S32760 Nut and Bolts Size | M3 To M56 3/6″ to 2″ |
| Length | 3 to 200 MM |
| Super Duplex Steel 2207 Machine Screws Size | M1.6 To M12 |
| Duplex Steel 2205 Washers Size | M3 To M56 3/6″ to 2″ |
| 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 % |
| Material | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| Super Duplex Steel | 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
| Super Duplex Steel | 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
At Okoye Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Washers in Kinshasa, Congo, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Congo, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Super duplex steel washers are widely used in applications requiring high strength and corrosion resistance. It is commonly used in oil and gas, chemical processing, and marine environments where resistance to harsh conditions is critical. These washers are also used in power plants and desalination plants. Their excellent mechanical properties make them suitable for critical fastening applications, including flanged connections, bolted joints, and structural assemblies Super Duplex Steel Washers help ensure that equipment in tight spaces and softer will last longer and be more reliable.
