Home > Duplex Steel > Duplex Steel Stud Bolts
Aisha Nickel Alloys is a trusted manufacturer and supplier of Duplex Steel Stud Bolts in Muscat, Oman, offering high-strength fastening solutions for critical industrial applications. Manufactured using advanced forging and precision threading techniques, these stud bolts provide excellent dimensional accuracy, strong thread engagement, and dependable performance. Aisha Nickel Alloys follows strict international quality standards to ensure consistent quality, durability, and corrosion resistance. With efficient supply capabilities, timely delivery, and a customer-focused approach, the company serves oil and gas, marine, chemical, and power generation industries worldwide.
| 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 % |
Duplex steel stud bolts are produced from a chromium-nickel-molybdenum alloy with a balanced austenitic and ferritic microstructure. This composition offers high tensile and yield strength, excellent resistance to stress corrosion cracking, and superior toughness. The presence of molybdenum and nitrogen enhances pitting and crevice corrosion resistance. Duplex steel stud bolts maintain good fatigue strength, impact resistance, and mechanical stability under high pressure, heavy loads, and fluctuating temperature conditions.
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Duplex steel stud bolts are widely used in applications requiring high strength and corrosion resistance. They are commonly employed in oil and gas pipelines, pressure vessels, and offshore platforms exposed to harsh and chloride-rich environments. In chemical and petrochemical plants, these stud bolts are used for flanged joints, heat exchangers, and reactors. Duplex steel stud bolts are also suitable for marine structures, desalination plants, and power generation facilities, ensuring secure fastening, long service life, and reliable performance in demanding operating conditions.
