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Aisha Nickel Alloys is a leading manufacturer and supplier of Super Duplex Steel Bolts in Muscat, OMAN. Our Super Duplex Steel Bolts are engineered to provide exceptional strength, durability, and resistance to corrosion, making them ideal for the most demanding environments. Designed for high-stress applications, these bolts excel in industries such as oil and gas, marine, and chemical processing. At Aisha Nickel Alloys, we are committed to delivering top-quality products that adhere to stringent industry standards. Our advanced manufacturing processes and dedication to excellence ensure that each bolt offers reliable performance and longevity. Trust us to meet your needs with our high-performance Super Duplex Steel Bolts, trusted by clients across Muscat and beyond.
| Standard | DIN, ASTM, BS and all International Standards |
| Specifications | ASTM A479 & ASME SA479 |
| UNS S32760 Nut and Bolts Size | M3 To M56 3/6″ to 2″ |
| Length | 3 to 200 MM |
| Super Duplex Steel 2207 Machine Screws Size | M1.6 To M12 |
| Duplex Steel 2205 Washers Size | M3 To M56 3/6″ to 2″ |
| Grade | C | Cr | Mn | Mo | N | Ni | P | S | Si | Cu |
| Super Duplex Steel Bolts | 0.04 max | 24.0-27.0 | 1.5 max | 0.1-0.25 | 4.5-6.5 | 6.0-8.0 | 0.040 max | 0.030 max | 1.0 max | 1.5 |
| Tensile Strength(MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) | |
| Super Duplex Steel Bolts | 760 | 550 | 15 | 32 Max |
What sets Super Duplex Steel Bolts apart is their balanced austenitic-ferritic microstructure, which gives them both high tensile strength and excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. Their chemical makeup usually features high levels of chromium, molybdenum, nickel, and nitrogen, which boost toughness and fatigue resistance. On the mechanical side, these bolts show high yield and tensile strength, good impact toughness, and dependable performance even under cyclic loading, temperature changes, and harsh chloride-rich conditions.
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You’ll see Super Duplex Steel Bolts widely used in offshore oil and gas platforms, petrochemical plants, refineries, desalination units, heat exchangers, and marine structures. They’re ideal for connecting pipes, pressure vessels, structural assemblies, and heavy machinery that face corrosive environments. With their combination of high strength, corrosion resistance, and long service life, they’re the go-to choice for critical fastening applications in demanding industrial and marine settings.
