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At Hazlewood Fasteners in Canberra, we design strength that thrives where others falter. Our Super Duplex Steel S32750 bolts are built to conquer extremes—crafted for unmatched durability, corrosion resistance, and mechanical integrity in the world’s most aggressive environments. With a superior dual-phase microstructure, these bolts combine the toughness of ferritic steel with the flexibility of austenitic steel, ensuring unwavering performance under immense pressure. From offshore rigs to chemical plants, Hazlewood Fasteners’ S32750 bolts anchor reliability into every connection—delivering fastening solutions that embody endurance, precision, and the uncompromising spirit of industrial excellence.
Super Duplex Steel S32750 bolts are composed of a precisely balanced mix of chromium, nickel, molybdenum, and nitrogen, giving them extraordinary resistance to pitting, crevice corrosion, and chloride stress cracking. Their dual-phase ferritic-austenitic structure provides exceptional tensile and yield strength—nearly double that of standard stainless steels. These bolts maintain stability under extreme temperatures and mechanical stress, offering superior fatigue resistance and dimensional integrity. With excellent weldability, hardness, and corrosion performance, S32750 bolts deliver lasting strength where both chemical resistance and structural power are non-negotiable.
| 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″ |
| 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 |
| Phosphorus | Sulphur | Silicon | Carbon | Manganese | Nickel | Molybdenum | Nitrogen | Copper | Chromium |
|---|---|---|---|---|---|---|---|---|---|
| 0.035 % max | 0.02 % max | 0.80 % max | 0.03% Max | 1.20 % max | 6.00 – 8.00 % | 3.00 – 5.00 % | 0.24 – 0.32 % | 0.50 % max | 24.0 – 26.0 % |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Super Duplex Steel S32750 bolts are trusted wherever high strength and corrosion resistance define success. They are widely used in offshore oil and gas platforms, desalination plants, marine engineering, and chemical processing industries. Their ability to withstand chloride-rich and acidic environments makes them ideal for pipelines, pressure vessels, and heat exchangers. In pulp and paper mills, power generation, and structural applications, they ensure steadfast fastening under high stress and vibration. Whether submerged in saltwater or exposed to aggressive chemicals, Hazlewood Fasteners’ S32750 bolts deliver durability and precision—securing the infrastructure that drives global industry forward.
At Hazlewood Fasteners, our Super Duplex Steel Bolts S32750 are carefully installed to ensure safety and optimal quality. Each bolt is individually inspected and wrapped in corrosion resistant packaging, then placed in sturdy, carefully labeled boxes. Boxes are clearly marked with item details and sizes for easy handling and storage. We prioritize safe and efficient deliveries, so our packaging also includes shock absorbers to prevent damage during transit, and to ensure your fasteners arrive in edible condition deaf
Hazlewood Fasteners is a leading manufacturer and supplier of high-quality fasteners in Canberra, Australia, with over 8 years of experience serving global industries.
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