Home > Super Duplex Steel > Super Duplex Steel Stud Bolts
Elvis Nickel Alloys, based in Houston, USA, stands out as a top manufacturer and supplier of Super Duplex Steel Stud Bolts, designed specifically for critical fastening tasks in extremely corrosive and high-pressure settings. These bolts are crafted from durable super duplex grades like UNS S32750 and UNS S32760, which provide an impressive mix of strength, corrosion resistance, and fatigue durability. Thanks to their balanced ferritic-austenitic structure, Super Duplex stud bolts find their place in industries such as offshore oil & gas, chemical processing, marine engineering, and power generation, where reliability against harsh conditions is crucial. They meet standards like ASTM A193, ASME B16.5, and DIN specifications
Super Duplex Steel Stud Bolts generally consist of 24–26% chromium, 6–8% nickel, 3–5% molybdenum, and 0.2–0.3% nitrogen, along with small amounts of manganese, copper, and silicon. These components work together to provide outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. The bolts boast a tensile strength of up to 800 MPa, yield strength of at least 550 MPa, and an elongation of 25% or more. They excel in extreme temperatures and pressures, making them perfect for both static and dynamic loads in challenging service environments.
| 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 Elvis Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Stud Bolts in Texas, USA, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the USA, 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 Stud Bolts are commonly found in offshore platforms, heat exchangers, pressure vessels, chemical tanks, subsea pipelines, and desalination plants, where they face exposure to seawater, chlorides, and various chemicals. They guarantee leak-proof, high-strength fastening for flanges, pumps, valves, and other heavy-duty assemblies. These bolts are perfect for critical structural connections that require a long service life, corrosion resistance, and mechanical stability. Their remarkable fatigue resistance and high strength-to-weight ratio make them particularly well-suited for environments that experience vibration, thermal cycling, and high stress.
