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Marsh Nickel Alloys, located in Canberra, Australia, has built a solid reputation as a reliable manufacturer and supplier of top-notch Super Duplex Steel Stud Bolts. These bolts are celebrated for their outstanding corrosion resistance and impressive strength. Crafted to meet the rigorous demands of industrial applications, each stud bolt is produced with meticulous attention to detail, ensuring they stand the test of time even in the harshest environments. Marsh Nickel Alloys employs cutting-edge manufacturing techniques alongside strict quality control measures to provide products that meet international standards. Their expertise guarantees that clients receive stud bolts that can endure extreme conditions, making them the perfect choice for the chemical, petrochemical, and marine industries that require durable fasteners.
Super Duplex Steel Stud Bolts are primarily made up of high chromium (24–26%), molybdenum (3–5%), and nickel (6–8%), which gives them remarkable resistance to pitting, crevice, and stress corrosion cracking. These bolts showcase a unique blend of ferritic and austenitic microstructures, resulting in exceptional mechanical properties. They can achieve tensile strength up to 1,000 MPa and yield strength around 550–650 MPa, along with superior hardness, making them ideal for high-stress applications. The combination of their microstructure and composition ensures they maintain excellent toughness at low temperatures while remaining stable at higher temperatures, delivering outstanding performance in aggressive chemical and marine settings.
| Specification | ASTM F593, F594, F1554 / ASME SF593, F594, F1554 |
| Standard | DIN : DIN 934, DIN 931, DIN 970, DIN 933 UTS : UNEF, NPT, UNC, UNS, UNF, NPTF ISO : JIS standards, ISO 4033, ISO 4032, ANSI – American National Standards Institute ASME B18.5 ANSI B 28.2.4 1M as per defined in ASME B16.5 standard Monel Monel® Alloy 400 Stud nuts length ANSI B 18.2.4 2M as per defined in ASME B18.2.2 Monel Alloy 400 Hex nuts |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Length | 3 mm to 200 mm | Custom Sizes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Threads | Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically |
| Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Test Certificate | As per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
| Raw materials Source | JSPL, Mukund Steel, Tata Steel, Dhamm Steel, Usha Martin,etc. |
| Packing | IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request |
| Surface Coating | Cadmium Coating Hot Dipped Galvanizing Coating Ptfe Coated Nickel Alloy 200 Fasteners Phosphate Coating Teflon Coating Xylon Coating Zinc Coating |
| Grade | C | N | P | Si | Mn | Mo | Fe | Cr | S | Ni |
| Super Duplex Steel Stud Bolts | 0.030 max | 0.24 – 0.32 | 0.035 max | 0.80 max | 1.20 ma | 3.0 – 5.0 | – | 24.0 – 26.0 | 0.020 max | 6.00 – 8.00 |
| Grade | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| Super Duplex Steel Stud Bolts | 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
At Marsh Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Stud Bolts in Canberra, Australia, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Australia, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Super Duplex Steel Stud Bolts are widely used across various industries that require corrosion-resistant fasteners with high mechanical strength. You’ll find them in oil and gas platforms, refineries, chemical processing plants, desalination facilities, and offshore structures. These bolts are perfect for connecting flanges, pressure vessels, and pipelines, especially in environments where exposure to chloride-rich conditions and extreme mechanical stress is a regular occurrence. Additionally, they play a crucial role in marine engineering, power generation, and the pulp and paper industries, ensuring safety, reliability, and longevity.