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Boikanyo Fasteners is a reputable manufacturer and supplier of Super Duplex Steel Washers, proudly based in Cape Town, South Africa. We specialize in providing top-notch fastening solutions tailored for critical industrial applications. Super Duplex Steel is known for its remarkable corrosion resistance and impressive mechanical strength, making it the perfect choice for challenging environments like chemical, marine, and industrial settings. Our Super Duplex Steel Washers are meticulously engineered to meet international standards, guaranteeing durability, consistent dimensions, and dependable performance across various sectors, including offshore, chemical processing, oil and gas, and power generation.
These washers are crafted from alloys rich in chromium, nickel, molybdenum, and nitrogen, which give them exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. They boast excellent tensile strength, good fatigue resistance, and maintain their mechanical stability even across a wide temperature range. Designed to evenly distribute load, they help minimize wear on bolted joints and ensure secure fastening, even under high-stress and corrosive conditions.
| 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 Themban Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Washers in Cape Town , South Africa, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Cape Town, 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 oil and gas installations, chemical processing plants, desalination units, marine equipment, and power generation facilities. Their unique blend of high strength, corrosion resistance, and reliability guarantees long-lasting performance, reduced maintenance, and secure bolted connections, even in the toughest industrial and marine environments.
