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Super Duplex Steel Screws are top-notch fastening components crafted for situations that demand outstanding strength, durability, and resistance to corrosion. Made from advanced super duplex stainless steel grades like S32750 and S32760, these screws excel at resisting pitting, crevice corrosion, and stress corrosion cracking caused by chlorides. Thanks to their unique dual-phase microstructure, they maintain excellent mechanical stability, even in tough offshore, marine, and chemical processing settings. You’ll find Super Duplex Steel Screws commonly used in desalination plants, petrochemical systems, seawater equipment, and high-pressure industrial applications. Their reliability and long lifespan make them perfect for challenging fastening jobs in aggressive and corrosive environments.
Super Duplex Steel Screws boast high levels of chromium (24–26%), nickel (6–8%), molybdenum (3–5%), nitrogen, and trace elements that boost their strength and corrosion resistance. Their ferritic–austenitic microstructure gives them impressive tensile strength, remarkable fatigue resistance, and excellent impact toughness. These screws maintain their structural integrity even under high pressures and temperature changes, providing enhanced resistance to chloride-induced pitting and stress corrosion cracking. With exceptional hardness, wear resistance, and stability in harsh chemical environments, Super Duplex Steel Screws ensure long-lasting mechanical performance in the most demanding industrial conditions.
| Standard | DIN, ASTM, BS and all International Standards |
| Specifications | ASTM A479 & ASME SA479 |
| Length | 3 to 200 MM |
| Super Duplex Steel 2207 Machine Screws Size | M1.6 To M12 |
| 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 Product | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) |
| Super Duplex Steel Screw | 760 | 550 | 15 | 32 Max |
At Nasir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Screws 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 Screws are a go-to choice in various industries where top-notch corrosion resistance and impressive strength are a must. You’ll find them on offshore oil and gas platforms, where they secure subsea components, structural assemblies, and seawater-handling systems. Chemical and petrochemical plants depend on these screws to fasten pipelines, heat exchangers, tanks, and process equipment that face harsh chemicals. They’re also popular in desalination plants, marine engineering, and high-pressure fluid systems thanks to their outstanding resistance to chlorides. Beyond that, they find their place in pulp and paper processing, power generation, water treatment facilities, and heavy industrial machinery. Their durability makes them perfect for critical, long-term fastening needs.
