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Elvis Nickel Alloys, a top-notch manufacturer and supplier located in Houston, USA, specializes in high-quality Duplex Steel Stud Bolts that are built for strength, corrosion resistance, and long-lasting durability. These bolts are crafted from duplex stainless steel grades like UNS S31803 and UNS S32205, which boast a unique dual-phase microstructure that combines the best features of ferritic and austenitic steels. Perfectly suited for high-stress, corrosive environments, Duplex Steel Stud Bolts find their place in industries such as oil & gas, petrochemical, marine, and power generation. They come in various sizes and threading types, adhering to international standards like ASTM A479 and ASME B18.2.1.
Duplex Steel Stud Bolts generally consist of 21–23% chromium, 4.5–6.5% nickel, 2.5–3.5% molybdenum, and 0.14–0.20% nitrogen, with iron as the primary component. These bolts boast a tensile strength of ≥620 MPa, yield strength of ≥450 MPa, and impressive elongation (≥25%). Their unique dual-phase (ferritic-austenitic) structure ensures outstanding fatigue resistance, stress corrosion cracking resistance, and protection against crevice and pitting corrosion, particularly in environments rich in chlorides or under high pressure. Additionally, Duplex stud bolts maintain excellent dimensional stability and mechanical integrity across a wide temperature range.
| 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 % |
At Elvis Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Stud Bolts in Texas, USA, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the USA, 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.
Duplex Steel stud bolts are widely used in demanding industries, including oil and gas, chemical processing, and marine environments. They are ideal for securing structural components, flanges, and equipment in settings where high strength and corrosion resistance are crucial. Common applications include offshore platforms, refineries, and high-pressure systems. Their robustness and resistance to environmental factors make them suitable for use in both high-stress and corrosive conditions, ensuring long-term reliability and performance.
