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Marsh Nickel Alloys is a leading manufacturer and supplier of Super Duplex Steel Bolts in Canberra, Australia. 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. AtMarsh 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 Canberra 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 |
**Super Duplex Steel bolts** offer an impressive blend of high tensile strength and excellent resistance to **pitting, crevice corrosion**, and **chloride stress corrosion cracking**, thanks to their unique dual-phase microstructure of austenite and ferrite. These bolts are perfectly suited for high-load, corrosive environments, ensuring long-lasting performance in extreme conditions, including saltwater and harsh chemical exposure. Their exceptional fatigue strength and stress resistance make them ideal for both structural and pressure applications.
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You’ll find Super Duplex Steel bolts from Marsh Nickel Alloys widely used in **flanged joints**, **pipeline assemblies**, **desalination plants**, **structural supports**, and **chemical processing equipment**. Available in a variety of head types, thread patterns, and finishes, these bolts are manufactured to meet international standards (ASTM, ASME, DIN), ensuring reliability and safety. Whether for subsea applications or heavy-duty infrastructure, Marsh Nickel Alloys delivers robust Super Duplex bolt solutions that can tackle Canberra’s most demanding industrial needs.
