Home > Super Duplex Steel > Super Duplex Steel Stud Bolts
Super Duplex Steel Stud Bolts are robust fasteners crafted from a specialized stainless steel alloy renowned for its superior strength and corrosion resistance. With dual-threaded ends, they excel in securing components in challenging environments such as offshore rigs and chemical processing plants. These bolts provide reliable fastening solutions in critical applications where conventional fasteners would succumb to corrosion, ensuring structural integrity and safety. Their high durability and resistance to harsh conditions make them indispensable for industries requiring uncompromising reliability and longevity.
| 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 | 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 % |
| 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 |
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We offer These Super Duplex Steel Stud Bolts as per DIN, ISO, JIS or ANSI Standard.
Corrosion Resistance: Super Duplex steel has increased corrosion resistance compared to standard duplex stainless steel. This makes it suitable for use in harsh environments such as marine, coastal and medical facilities where corrosion is a major concern.
High Strength: Super Duplex steel stud bolts have superior tensile and yield strength compared to standard duplex stainless steel or austenitic steel. This allows them to withstand higher loads and stresses, making them suitable for critical applications where strength is paramount.
Durability: The combination of superior strength and corrosion resistance ensures the durability and durability of Super Duplex steel stud bolts, reducing the need for frequent replacement and maintenance
Cost: While the initial cost of super duplex steel stud bolts may be higher compared to some other materials, their extended life and reduced maintenance tend to reduce overall cost over time vertical
Stress resistance to strain cracking: Super Duplex steel exhibits excellent resistance to corrosive stress cracking, a failure of which may occur in materials under tensile stress at corrosion zones. This property is particularly useful in the application of materials in chloride-containing environments.
Super Duplex Steel Stud Bolts applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
Marine Applications: Super duplex steel stud bolts are widely used in offshore oil and gas platforms, subsea pipelines and ships due to excellent corrosion resistance in rough marine environments, including seas of water, salt-dispersed and chloride-rich conditions.
Chemical and petrochemical industries: Used in chemical plants, refineries and petrochemical plants where exposure to volatile chemicals and high temperatures is common. Super Duplex steel stud bolts provide resistance to pitting, crevice corrosion and stress corrosion cracking effectively in these complex areas
Power generation: Power plants use seawater mainly for cooling; super duplex steel stud bolts are used to secure critical components like valves, flanges, pumps, etc. Their corrosion resistance and high strength make them suitable for conventional and renewable energy applications.
Desalination equipment: Super duplex steel stud bolts are preferred in desalination plants where seawater can be treated to obtain fresh water. These screws resist salting from the edges of the high salinity of seawater, ensuring the reliability and durability of equipment and structures.
Understand application requirements: Determine the exact conditions in which the stud bolt will be used. Consider temperature, pressure, potential dissipation, and mechanical load.
Material Selection: Super Duplex Stainless Steel is known for superior corrosion resistance and mechanical properties compared to conventional duplex or austenitic stainless steel. This confirms. Confirm that Super Duplex Steel is suitable for your operational needs.
Grade Selection: Super duplex stainless steels are available in various grades, such as UNS S32750 (commonly referred to as 2507) and UNS S32760. The chemical composition and mechanical properties of each class are slightly different. Choose the grade that best suits your application needs.
Size and Length: Determine the appropriate size and length of stud bolts based on your application requirements, including the thickness of the fasteners and required thread compatibility
Corrosion Resistance: Super Duplex Stainless Steel is very corrosion resistant, especially in harsh environments containing chloride ions. Make sure the stud bolts provide adequate corrosion resistance for your specific application.
Yes, Super Duplex Steel Stud Bolts are recyclable. Stainless steel, including super duplex stainless steel, is a highly recyclable material. The recycling process involves melting down the steel to be reused in various applications. Recycling stainless steel helps conserve natural resources, reduces energy consumption, and minimizes waste.
Yes, Super Duplex Steel stud bolts can be used for underground applications, particularly in environments where corrosion resistance and mechanical strength are crucial factors. Super Duplex Steel is known for its excellent corrosion resistance, particularly in aggressive environments such as those found underground, where it may be exposed to moisture, soil, and other corrosive substances. Its high strength and resistance to pitting and crevice corrosion make it a suitable choice for such applications. However, proper engineering and installation practices should always be followed to ensure the longevity and performance of any material used underground.
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