Home > Duplex Steel > Duplex Steel Stud Bolts S31803
Duplex Steel Stud Bolts S31803 embody the epitome of high-performance fastening solutions. Crafted from a carefully engineered duplex steel composition, they seamlessly blend the exceptional characteristics of austenitic and ferritic stainless steels. Celebrated for their remarkable strength and corrosion resistance, these stud bolts find indispensable utility across critical sectors like oil and gas, chemical processing, and marine applications. Their resilience against harsh environments is unmatched, offering steadfast performance where traditional fasteners may falter. With an innate ability to withstand corrosion, stress corrosion cracking, and extreme temperatures, Duplex Steel Stud Bolts S32205 stand as a beacon of reliability and durability, ensuring steadfast fastening solutions even in the most demanding scenarios.
| Grade | Duplex Steel UNS S31803 / S31803 |
| 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 |
S31803 | 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 % |
S31803 |
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 |
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We offer These Duplex Steel S31803 Stud Bolts as per DIN, ISO, JIS or ANSI Standard.
Corrosion Resistance: Duplex steel S31803 has excellent corrosion resistance, especially in harsh environments such as those containing chloride, making it ideal for applications in the marine, chemical and petrochemical industries
Weldability: Duplex steel S31803 is easily weldable using conventional welding techniques, allowing easy fabrication and assembly of parts.
Cost-effectiveness: While the initial cost of duplex steel may be higher compared to conventional materials, its corrosion resistance and superior strength can result in long-term cost savings by reducing maintenance, repair and replacement costs
Fatigue resistance: Duplex steel S31803 stud bolts have fatigue resistance, making them suitable for applications with cyclic loads, such as offshore structures and generating equipment
Strength: These stud bolts exhibit superior strength and stiffness, allowing them to withstand heavy loads and high-stress conditions without information or failure
Duplex Steel S31803 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.
Oil and Gas Industry: Duplex steel S31803 stud bolts are widely used in the oil and gas industry for various applications, including pipelines, offshore platforms, subsea equipment and refineries. They offer high corrosion resistance and suitable strength in this complex environment.
Pulp and Paper Industry: In the pulp and paper industry, duplex steel S31803 stud bolts are used in equipment such as digesters, bleach towers and pulp washers, where corrosive chemicals and high temperatures are used
Power performance: Stud bolts made of duplex steel S31803 are used in power plants, including fossil fuel, nuclear and renewable energy plants, due to high strength and corrosion resistance in materials for important purposes such as turbines and heat exchangers.
Marine Applications: Duplex Steel S31803 Stud Bolt Chloride Stress Corrosion Cracking and Pitting Find applications in the marine environment due to corrosion resistance. It is used in shipbuilding, offshore structures and seawater desalination.
Chemical applications: These stud bolts are used in chemical plants where they are exposed to debris. Their excellent corrosion resistance to chemicals and acids makes them ideal for use in reactors, molds, and other equipment.
Understanding Duplex Steel S31803: Start by familiarizing yourself with the characteristics of Duplex Steel S31803. These steels offer a combination of excellent corrosion resistance, high strength and weldability, making them suitable for various industrial applications, especially in chloride-containing media.
Size and Thread Specification: Based on your application’s design requirements, determine the appropriate size and thread specification for the stud bolts. Consider bolt diameter, thread pitch, length, and thread engagement to ensure compatibility with mating components.
Mechanical properties: Determine the important mechanical properties of stud bolts, including tensile strength, yield strength, and expansion. Duplex steel S31803 provides high strength and is useful for load-bearing applications.
Corrosion Resistance: Duplex steel S31803 is known for its superior corrosion resistance compared to austenitic and ferritic stainless steel. However, consider the corrosion resistance necessary for your application, especially when working with complex materials such as seawater or chemicals.
Analysis of Operational Requirements: Determine your application’s specific requirements, including factors such as operating temperature, pressure, chemical environment, mechanical loads, etc. These factors will affect the type, size, and grade of stud bolts required.
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