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Xuan Nickel Alloys is a leading manufacturer and supplier of super duplex steel fasteners in Da Nang, Vietnam. Our super duplex steel fasteners are engineered to deliver exceptional strength, durability and excellent resistance to corrosion, making them ideal for the toughest environments. Focusing on high quality materials and precision technology, our fasteners are perfect for applications in the oil, gas, marine and chemical sectors At Xuan Nickel Alloys, we are dedicated to meeting the highest industry standards role and provide reliable solutions to our customers. Our extensive experience and advanced manufacturing capabilities ensure that our super duplex steel fasteners deliver outstanding performance and longevity, positioning us as the preferred choice for customers in Da Nang and beyond.
Xuan Nickel Alloys stands out as a top manufacturer and supplier based in Da Nang, Vietnam, specializing in high-quality Super Duplex Steel Fasteners tailored for critical industrial applications. These fasteners are celebrated for their remarkable strength, durability, and resistance to corrosion, making them reliable performers in tough, high-pressure settings. With a unique dual-phase microstructure of austenite and ferrite, Super Duplex Steel Fasteners are built to withstand pitting, crevice corrosion, and stress corrosion cracking, which makes them perfect for industries like marine, oil and gas, chemical, petrochemical, desalination, and power generation.
| Specification | IS, BS, ASTM, ASME |
| Grade | Super Duplex Steel | UNS S32750 | S32760 |
| Standard | ASTM A479 ASME SA479 |
| Length | 3mm to 200mm |
| Form | Screw, Nuts, Bolts, Washers |
| Size | 3/6″ to 2″, M3 – M56, Custom Sizes |
| Application | Oil & Gas, Heat exchanger and condenser, Automobile Industry, Engineering, Power plants, Refineries & Petrochemicals, Ship building, Desalination Plants |
| 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 % |
| Grade | YS (MPa) | UTS (MPa) | % Elongation | Hardness(BHN) |
| UNS S32750 | 550 min. | 795 min. | 15 min. | 310 max. |
| UNS S32760 | 550 min. | 750 min. | 25 min. | 270 max. |
These fasteners are crafted from a blend of high chromium (around 25%), nickel, molybdenum, and nitrogen, which not only boosts their mechanical strength but also enhances their corrosion resistance. They deliver impressive tensile strength ranging from 800 to 1000 MPa, with yield strength that’s nearly double that of standard austenitic stainless steels. Even in freezing temperatures, they maintain excellent toughness and ductility. Their advanced alloy composition provides strong resistance to chloride-induced stress corrosion cracking, localized corrosion, and erosion, ensuring they are dependable for critical fastening in harsh conditions.
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Super Duplex Steel Fasteners find their place in industries where safety and reliability are paramount. They are commonly used in offshore platforms, subsea pipelines, and marine structures that frequently face saline and corrosive environments. In the oil and gas sector, they are essential for pressure vessels, process piping, and heat exchangers. Chemical and petrochemical facilities depend on them for managing aggressive fluids, while desalination and power generation plants appreciate their long service life. Moreover, these fasteners are utilized in heavy-duty structural applications and critical engineering assemblies that demand top-notch performance and safety.
