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Xuan Nickel Alloys is a reliable manufacturer and supplier of Duplex Steel S31803 Stud Bolts based in Da Nang, Vietnam. We pride ourselves on providing top-notch duplex stainless steel fasteners that are designed to meet the demands of tough industrial applications. Our Duplex Steel S31803 Stud Bolts offer an impressive blend of high strength and outstanding corrosion resistance, ensuring that your connections in critical piping and equipment systems are secure, durable, and leak-proof. Crafted with precision and a commitment to international standards, these stud bolts guarantee superior mechanical performance, reliability, and a long service life. We cater to various industries, including chemical processing, oil and gas, petrochemical, and marine, delivering cost-effective, high-performance fastening solutions around the globe.
These Duplex Steel S31803 Stud Bolts feature a well-balanced ferritic-austenitic stainless steel microstructure, typically made up of 22% chromium, 5–6% nickel, 3% molybdenum, and trace amounts of nitrogen. They boast high tensile and yield strength, excellent toughness, and remarkable resistance to stress corrosion cracking. Additionally, the alloy provides exceptional protection against pitting and crevice corrosion in environments rich in chlorides and acids. With good machinability, weldability, and long-term structural stability, our Duplex Steel S31803 Stud Bolts are designed to perform reliably under thermal, mechanical, and chemically aggressive industrial conditions.
| Grade | Duplex Steel UNS S31803 / S31803 |
| Specifications | ASTM A 479 ASME SA 479 |
| Dimension | DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Types | Threaded Rod, Class A double ended stud, Tie Rod, Double Ended Stud, Stud Bolts, Bronze Hex Studs, Threaded Studs etc |
| S31803 | C | N | P | Si | Mn | Mo | Fe | Cr | S | Ni |
| 1.0 | 0.03 | 0.02 | 2.0 | 3.0 – 3.5 | 22.0 – 23.0 | 0.03 | 4.5 – 6.5 | 0.14 – 0.2 | Bal |
| S31803 | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
At Xuan Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Stud Bolts in Da Nang, Vietnam, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Vietnam, 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.
These stud bolts are widely utilized in industries that require secure, high-strength, and corrosion-resistant fastening solutions. In chemical processing, they find applications in reactors, heat exchangers, and piping systems that come into contact with aggressive chemicals. The oil and gas sector uses them in offshore platforms, subsea pipelines, and sour gas systems. Petrochemical plants rely on these stud bolts for process equipment, evaporators, and condensers. In marine applications, they are essential for seawater systems, desalination plants, and shipbuilding. Their unique combination of mechanical strength and corrosion resistance makes them a go-to choice for demanding environments.