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Russ Nickel Alloys, a premier manufacturer and distributor based in Manila, Philippines, offers top-quality Duplex Steel stud bolts designed for high-performance applications. Renowned for their exceptional strength, corrosion resistance, and durability, these bolts are ideal for use in challenging environments. Our Duplex Steel stud bolts are crafted to meet rigorous industry standards, ensuring reliability and longevity in structural and industrial settings. With a commitment to excellence and customer satisfaction, Russ Nickel Alloys provides superior products that cater to diverse needs, making us a trusted partner in the engineering and manufacturing sectors.
| Grade | Duplex Steel UNS S31803 / S32205 |
| 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 |
| Duplex Steel Stud Bolts | 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 |
| Duplex Steel Stud Bolts | 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 % |
The composition of Duplex Steel Stud Bolts includes around 22% chromium, 5–6% nickel, 3% molybdenum, and nitrogen, which together create a dual-phase microstructure of ferrite and austenite. This unique blend results in remarkable tensile and yield strength, along with outstanding resistance to stress corrosion cracking, pitting, and crevice corrosion. Additionally, these bolts boast good weldability, toughness, and oxidation resistance, even at high temperatures, guaranteeing long-lasting performance in tough operating conditions.
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Duplex Steel Stud Bolts find extensive use in petrochemical plants, refineries, offshore platforms, desalination units, and power generation systems. They are particularly well-suited for assembling flanges, valves, pumps, and pressure vessels that demand secure and durable fastening. With their superior corrosion resistance and mechanical strength, these bolts are the go-to choice for industries working in aggressive environments, ensuring reliability, safety, and a long service life.
