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The Fasteners Mart, Mumbai, India, is a premier manufacturer and supplier of high-grade fasteners with proficiency in Duplex Steel Stud Bolts S31803. Owing to their superior strength, corrosion resistance, and performance, these stud bolts are ideal for use in extreme environments, i.e., chemical, petrochemical, and marine sectors. The Fasteners Mart has a keen interest in proper manufacturing techniques to deliver lasting and reliable fasteners in conformance with global standards. Focused on product excellence and customer service, they offer tailor-made solutions to fit the particular requirements of varied industrial applications
Duplex Steel S31803 (UNS S31803) is a sophisticated alloy with a balanced combination of approximately 22% chromium, 5% nickel, 3% molybdenum, and 0.2% nitrogen. This type of combination allows it to possess enhanced pitting, crevice, and stress corrosion cracking resistance due to which it is appropriate for severe environments. Duplex Steel S31803’s mechanical properties are a tensile strength of approximately 620 MPa, a yield strength of 450 MPa, and elongation of 25%. These properties, along with its toughness and weldability, make it suitable for severe service in applications such as chemical processing and marine.
| 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 |
| 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 % |
| 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 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Duplex Steel Stud Bolts S31803 are widely used in corrosive and high-strength industries. They are optimally suited for harsh environments such as chemical, petrochemical, oil and gas, marine, and power generation sectors. Their exceptional pitting, crevice, and stress corrosion cracking resistance makes them optimally suited for high-reliability applications like heat exchangers, pressure vessels, and pipeline systems. Moreover, Duplex Steel S31803 possesses better performance in seawater, acidic, and high-temperature environments. Owing to exceptional mechanical properties and strength, such stud bolts play a crucial role in providing lasting and dependable fastening solutions for harsh industrial conditions.
Duplex Steel S31803 Stud Bolts are packaged in a way to prevent transit damage. The stud bolts are packed safely in strong boxes or wooden crates containing cushioning material to prevent damage. The stud bolt undergoes rigorous testing prior to shipping, including dimensional checks, visual, dimensional, mechanical properties like tensile test and corrosion test. This ensures the fasteners are of high quality and operational in severe service conditions. The Fasteners Mart guarantees that the products are of premium quality and in stock for direct use in imminent applications in heavy-industry environments.
The Fasteners Mart is a leading manufacturer and supplier of high-quality fasteners in Mumbai, India, with over 8 years of experience serving global industries.
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