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Elvis Nickel Alloys, located in Houston, USA, is a trusted manufacturer and supplier of top-notch Super Duplex Steel Washers, specifically crafted for high-stress and highly corrosive environments. These washers, made from high-quality alloys like UNS S32750 and UNS S32760, boast remarkable resistance to chloride-induced stress corrosion cracking, pitting, and crevice corrosion. Thanks to their dual-phase (austenitic-ferritic) microstructure, they offer enhanced mechanical strength, fatigue resistance, and durability, even under extreme temperatures and pressures. Perfect for industries such as offshore, marine, chemical, and oil & gas, Elvis Nickel Alloys’ Super Duplex washers comply with global standards like ASTM A240, A479, and EN 1.4410.
Super Duplex Steel Washers generally consist of about 24–26% chromium, 6–8% nickel, 3–5% molybdenum, and 0.2–0.3% nitrogen, with the remainder being iron and small amounts of manganese, copper, and silicon. These washers provide impressive tensile strength (up to 800 MPa) and yield strength of at least 550 MPa, along with excellent elongation (≥25%). Their dual-phase structure guarantees outstanding performance in high chloride, acidic, and brine-rich settings, maintaining impact toughness even in low temperatures. Their exceptional corrosion and stress resistance make them perfect for demanding mechanical and environmental applications.
| 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 Elvis Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Washers in Texas, USA, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the USA, 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 find extensive use in offshore drilling rigs, subsea pipelines, chemical processing units, desalination plants, and high-pressure vessel assemblies. They are ideal for bolted connections that need superior resistance to seawater, chlorides, and harsh chemicals, ensuring leak-proof and durable joint integrity. Commonly found in flanges, valves, heat exchangers, and structural assemblies, they are also suitable for bridge construction, nuclear facilities, and marine fasteners. Their impressive mechanical strength and outstanding corrosion resistance significantly cut down on maintenance and enhance the longevity of critical applications.
