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Hazlewood Fasteners, a trusted manufacturer and supplier based in Canberra, Australia, offers premium-quality Duplex Steel Stud Bolts designed for exceptional strength, corrosion resistance, and long-lasting performance. The company specializes in precision-engineered fastening solutions that meet global standards for demanding industrial applications. With advanced manufacturing processes and stringent quality checks, Hazlewood Fasteners ensures its Duplex Steel Stud Bolts perform reliably in harsh and corrosive environments. Widely used in industries such as marine, oil and gas, and construction, these fasteners reflect the company’s commitment to delivering durable, high-performance products that ensure safety, stability, and operational efficiency.
Duplex Steel Stud Bolts are made from a balanced microstructure of austenite and ferrite, typically containing 22–25% chromium, 4–7% nickel, 2–3% molybdenum, and trace amounts of nitrogen. This combination provides superior resistance to pitting, crevice corrosion, and stress corrosion cracking. Mechanically, Duplex Steel offers nearly double the yield strength of standard austenitic stainless steels, with tensile strength ranging between 620–900 MPa. These bolts possess excellent fatigue resistance, high toughness, and good weldability. Their mechanical stability under high pressure and temperature variations makes them ideal for heavy-duty and critical fastening applications.
| 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 % |
| 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 |
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.
Duplex Steel Stud Bolts are extensively used in chemical processing, oil and gas refineries, marine engineering, desalination plants, and power generation systems. Their superior corrosion resistance makes them ideal for environments containing chlorides and acidic solutions. In offshore platforms, heat exchangers, and pressure vessels, these bolts provide reliable performance under harsh conditions. They are also widely used in structural and industrial frameworks requiring high tensile strength and long-term durability. Duplex Steel Stud Bolts ensure strong, secure connections, making them the preferred choice for industries that demand both mechanical integrity and corrosion resistance.
At Hazlewood Fasteners, we ensure Duplex Steel Stud Bolts are packaged with the utmost care to preserve their quality and integrity. Each bolt is individually inspected and securely wrapped in protective materials to prevent damage during transit. We offer a range of packaging options, including bulk cartons and custom-sized containers, to meet your specific needs. Our robust packaging solutions ensure that your fasteners arrive in pristine condition, ready for immediate use in your critical applications.
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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