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Duplex Steel Stud Bolts are high-strength fasteners made from a type of stainless steel known as duplex steel. This steel blend combines the best attributes of both austenitic and ferritic stainless steels, offering exceptional strength and corrosion resistance. These stud bolts are commonly used in industries like oil and gas, chemical processing, and marine applications where harsh environments demand reliable and durable fastening solutions. They provide excellent performance in settings where traditional steel fasteners might corrode or fail prematurely, offering superior resistance to corrosion, stress corrosion cracking, and high temperatures.
| 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 |
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 % |
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 |
At PipingMart, we take pride in being the largest supplier and manufacturer in the UAE, offering cutting-edge solutions for all your piping needs. With state-of-the-art production plants strategically located in the UAE, we boast a vast inventory of over 25,000 tons of premium-quality materials readily available in stock.
Contact us to get a quick quote for your requirement.
We offer These Duplex Steel Stud Bolts as per DIN, ISO, JIS or ANSI Standard.
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.
Yes, duplex steel stud bolts are recyclable. Duplex steel, like other stainless steels, is highly recyclable and can be melted down and reprocessed to create new products without losing its valuable properties. Recycling duplex steel stud bolts and other stainless steel components helps conserve natural resources, reduce energy consumption, and minimize waste. Additionally, stainless steel recycling is economically viable and contributes to sustainability efforts by promoting a circular economy where materials are reused and repurposed.
Yes, duplex steel stud bolts can be used for underground applications due to their corrosion resistance properties. Underground environments pose challenges such as moisture, soil acidity, and chemical exposure, which can lead to corrosion of traditional fasteners. Duplex steel’s exceptional corrosion resistance makes it suitable for withstanding these conditions, ensuring the integrity and longevity of underground structures and equipment. Whether in underground pipelines, utility installations, or mining operations, duplex steel stud bolts provide reliable fastening solutions that endure in harsh underground environments.
When installing duplex steel stud bolts, several considerations are crucial for ensuring proper performance and longevity. Firstly, it’s essential to verify the compatibility of the stud bolts with the surrounding environment, taking into account factors such as corrosion, temperature, and stress levels. Proper surface preparation and cleaning are necessary to remove contaminants that could compromise the integrity of the fasteners. Additionally, attention should be paid to the torque specifications and tightening procedures to prevent overloading or underloading, which can affect the bolt’s performance. Finally, regular inspection and maintenance are recommended to detect any signs of corrosion, wear, or loosening, ensuring the continued reliability of the duplex steel stud bolts over time.
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