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Super Duplex Steel Washers are designed to provide outstanding strength, corrosion resistance, and durability, even in the toughest industrial settings. Made from high-performance super duplex alloys like S32750 and S32760, these washers excel at resisting pitting, crevice corrosion, and chloride stress-corrosion cracking. Their remarkable mechanical strength and improved toughness make them perfect for offshore, marine, chemical processing, and high-pressure systems. Super Duplex Steel Washers are commonly used in situations where regular stainless steels fall short, guaranteeing long-lasting reliability, stability, and secure fastening performance in harsh operating conditions.
Super Duplex Steel Washers usually feature a well-balanced blend of austenitic and ferritic microstructures, containing 24–26% chromium, 3–5% molybdenum, 6–8% nickel, and nitrogen to boost strength. This unique composition provides exceptional corrosion resistance and a yield strength nearly double that of standard stainless steels. The washers are known for their excellent toughness, good weldability, and remarkable resistance to chloride-induced stress corrosion. With high tensile strength, superior fatigue performance, and the ability to endure extreme temperatures, they are ideal for critical fastening applications in aggressive industrial environments.
| 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 Nasir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Washers in Manama, Bahrain, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Bahrain, 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 utilized in industries that demand exceptional strength and resistance to corrosion, particularly in offshore drilling, subsea pipelines, heat exchangers, petrochemical facilities, and desalination plants. They ensure secure and stable fastening in equipment that faces seawater, high pressures, and harsh chemicals. You’ll also find these washers in pumps, valves, structural assemblies, marine hardware, chemical reactors, and high-load bolting systems. Thanks to their outstanding durability and resistance to pitting, they’re perfect for tough environments, guaranteeing a long service life and dependable performance, even in the most challenging mechanical and chemical situations.
