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Xuan Nickel Alloys is a leading manufacturer and supplier of Super Duplex Steel Nuts in Da Nang, Vietnam. Our Super Duplex Steel Nuts are engineered to provide exceptional strength and durability, making them ideal for high-stress and corrosive environments. With superior resistance to pitting, crevice corrosion, and stress corrosion cracking, these nuts are essential for applications in the oil and gas industry, chemical processing, and marine sectors. Xuan Nickel Alloys is committed to delivering top-quality products that meet international standards, ensuring reliable performance in critical operations. Our dedication to precision and quality makes us a trusted partner for industries demanding high-performance fastening solutions.
Xuan Nickel Alloys stands out as a top manufacturer and supplier based in Da Nang, Vietnam, specializing in high-quality Super Duplex Steel Nuts designed for critical industrial applications. These nuts are celebrated for their remarkable strength, durability, and resistance to corrosion, making them reliable choices for demanding and high-pressure environments. With a unique dual-phase microstructure that combines austenite and ferrite, Super Duplex Steel Nuts excel in resisting pitting, crevice corrosion, and stress corrosion cracking caused by chlorides. At Xuan Nickel Alloys, we pride ourselves on delivering precision-engineered nuts that adhere to international standards, catering to various industries including oil and gas, chemical, petrochemical, marine, desalination, and power generation.
| Standard | : | ASTM A193 / A479, ASME SA193 / A479 |
| Dimension | : | ASTM,DIN, BS,GB, IS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Nut Size | : | M02 to M33 | Custom Sizes |
| Heat Treatment | : | Annealing, Stress Relieving, Case Hardening, Quenching and Tempering. |
| Type | : | Hex Nut, Heavy Hex Nut, Lock Nut, Nylock Nut, Weld Nut, Dome Nut, Flange Nut, Square Nut, Eye Nut etc. |
| C | Cr | Ni | Mo | N | Others |
|---|---|---|---|---|---|
| 0.020 | 25 | 7 | 4.0 | .27 | S=0.001 |
| Ultimate Tensile Strength, ksi | 116 min. |
|---|---|
| 0.2% Offset Yield Strength 0.2%, ksi | 80 min. |
| 0.1% Offset Yield Strength 0.2%, ksi | 91 min. |
| Elongation in 2 inches, % | 15 min. |
| Hardness Rockwell C | 32 max. |
| Impact Energy, ft.-lbs. | 74 min. |
Crafted from a blend of high chromium (around 25%), nickel, molybdenum, and nitrogen, these Super Duplex Steel Nuts boast enhanced mechanical strength and corrosion resistance. They provide impressive tensile strength ranging from 800 to 1000 MPa, with yield strength nearly twice that of standard austenitic stainless steels. Even in sub-zero temperatures, these nuts maintain excellent toughness and ductility. Their advanced alloy composition ensures robust resistance to chloride-induced stress corrosion cracking, localized corrosion, and erosion, making them a dependable choice for critical fastening needs.
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Super Duplex Steel Nuts find extensive use across industries that demand secure and durable fastening solutions in harsh conditions. They’re commonly utilized in offshore platforms, subsea pipelines, and marine structures that face saline and corrosive environments. In the oil and gas sector, you’ll find them in pressure vessels, process piping, and heat exchangers. Chemical and petrochemical facilities rely on these nuts for managing aggressive fluids, while desalination and power generation plants appreciate their long service life. Additionally, they are essential in heavy-duty structural assemblies and critical engineering applications where reliability and safety are of utmost importance.
