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Russ Fasteners is a reliable manufacturer and supplier of high-performance Super Duplex screws, proudly based in Pulau Ujong, Singapore. We specialize in corrosion-resistant fastening solutions, offering precision-engineered Super Duplex screws that meet the highest standards for strength, durability, and resistance in tough environments. These screws are perfect for industries like offshore oil & gas, marine, petrochemical, and chemical processing. With cutting-edge manufacturing capabilities and a strong commitment to quality control, Russ Fasteners guarantees that every screw performs reliably. Our products adhere to global standards and come in a variety of sizes and specifications for both standard and custom applications.
The Super Duplex screws from Russ Fasteners are crafted from high-alloy stainless steel grades like UNS S32750 or S32760. These alloys boast around 25% chromium, 7% nickel, 3.5% molybdenum, and nitrogen, providing outstanding corrosion resistance, especially against pitting, crevice corrosion, and stress corrosion cracking. On the mechanical side, Super Duplex screws deliver remarkable tensile strength (usually exceeding 800 MPa) and high yield strength, nearly double that of standard austenitic stainless steels. Their excellent fatigue resistance and toughness make them ideal for extreme operating conditions. Each screw undergoes rigorous testing for dimensional accuracy, hardness, and metallurgical integrity.
| 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″ |
| Tensile Strength(MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) | |
| Super Duplex Steel Bolts | 760 | 550 | 15 | 32 Max |
| 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 % |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Super Duplex Steel Screws are used in various high performance areas. In chemical processing they are able to resist the effects of aggressive chemicals and high pressure. In marine applications, they are protected from corrosion by sea water hence giving long service life. In the oil and gas industry, they offer secure fastening where tension is usually high. Also, Super Duplex Steel screws are employed in power generation and construction industries because of their excellent performance in harsh conditions.
Super Duplex screws are designed for challenging environments where strength, corrosion resistance, and longevity are crucial. They are commonly found in offshore platforms, subsea equipment, chemical plants, and desalination systems, providing essential fastening in corrosive and high-pressure situations. Additionally, they are used in heat exchangers, pressure vessels, marine structures, and high-performance piping systems. Russ Fasteners’ Super Duplex screws are engineered to excel in these demanding applications, ensuring reliability and performance when it matters most.
Russ Fasteners is a leading manufacturer and supplier of high-quality fasteners in Pulau ujong, Singapore , with over 12 years of experience serving global industries.
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