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Brian Fasteners, Houston, USA, is a leading manufacturer and exporter of high-quality Super Duplex Screws. Known for precision and reliability, they supply industries like marine, oil & gas, petrochemical, and construction globally. Their fasteners are designed to work in severe and corrosive conditions. With advanced manufacturing technology and strict quality criteria, Brian Fasteners provides products that meet high industrial standards. Customers rely on them for superb technical assistance, prompt shipment, and tailored solutions that guarantee maximum performance and lifespan under heavy service conditions.
Super Duplex Screws are produced from a high-alloy material consisting of chromium (24–26%), nickel (6–8%), molybdenum (3–5%), and nitrogen with trace amounts of manganese and copper. This combination yields excellent resistance to pitting, crevice, and stress corrosion cracking. They possess better mechanical properties like tensile strength of more than 750 MPa, yield strength of more than 550 MPa, and great elongation and toughness even in lower temperatures. The two-phase structure of austenite and ferrite provides greater strength and corrosion resistance, such that these screws are best suited for severe and high-stress 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″ |
| 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 Screws are very often used in applications demanding high strength and superior corrosion resistance. They are critical in the oil and gas industry for offshore platforms, subsea hardware, and pipelines. Their higher resistance to seawater corrosion makes them perfect for marine construction, shipbuilding, and desalination facilities. They also find extensive application in chemical and petrochemical plants to secure equipment subject to aggressive fluids and high pressures. These screws also have uses in heat exchangers, pressure vessels, and structural assemblies, delivering long-term reliability in tough conditions.
At Brian Fasteners, We make sure that our Super Duplex Steel Screws are packed with the utmost of precaution. Every screw is covered separately to avoid any damages, rust or any other contaminant that may affect the screw during transportation. We employ sturdy cartons and provide customized packaging services depending on the client’s requirements. We ensure that our products are well packed and labeled to enhance identification and handling to ensure that the end consumer receives our products in the best condition.
Brian Fasteners is a leading manufacturer and supplier of high-quality fasteners in Houston , USA, with over 8 years of experience serving global industries.
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