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Mira Fasteners, based in Kuala Lumpur, Malaysia, stands out as a top manufacturer and supplier of Duplex Steel Stud Bolts S31803. They offer high-quality fastening solutions that are built to last, even in the toughest environments. Crafted from Duplex 2205 (UNS S31803) stainless steel, these stud bolts blend the strength of ferritic steel with the corrosion resistance of austenitic steel, ensuring they are both robust and long-lasting. They boast impressive resistance to pitting, crevice corrosion, and chloride stress corrosion cracking, making them perfect for use in marine, petrochemical, and offshore industries.
The typical chemical makeup of Duplex Steel Stud Bolts S31803 includes 22% chromium, 5–6% nickel, 3% molybdenum, and nitrogen, which together provide outstanding mechanical strength and corrosion resistance. With a tensile strength of about 620 MPa and a yield strength of around 450 MPa, they outperform many standard stainless steels.
| 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 demanding applications due to their superior strength and corrosion resistance. Commonly employed in the oil and gas industry, marine environments, and chemical processing, they are ideal for high-pressure and high-temperature conditions. These bolts are also used in construction and infrastructure projects where durability is crucial. Their resilience to stress corrosion and pitting makes them suitable for critical applications requiring reliable and long-lasting fastening solutions.
These stud bolts find their place in various applications, including pressure vessels, chemical processing plants, desalination facilities, heat exchangers, and oil and gas platforms, where high strength and reliability in extreme conditions are crucial.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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