Home > Duplex Steel > Duplex Steel S31803 Bolts
Fajar Metals, a well-respected manufacturer and supplier based in Jakarta, Indonesia, specializes in top-notch Duplex Steel S31803 Bolts that are perfect for high-performance applications in tough, corrosive, and high-stress settings. These bolts are celebrated for their remarkable strength, durability, and outstanding resistance to stress corrosion, pitting, and crevice corrosion. Crafted from high-grade duplex stainless steel, they’re the go-to choice for fastening systems in industries like oil & gas, petrochemical, desalination, and marine engineering. Fajar Metals offers these bolts in a variety of sizes, threading types, and standards to meet the demanding needs of industrial applications that require exceptional mechanical properties and long-lasting reliability.
Duplex Steel S31803 bolts are made from a precisely balanced mix of chromium, nickel, molybdenum, and nitrogen. This unique blend boosts the alloy’s corrosion resistance and mechanical strength, making these bolts perfect for environments with high chloride exposure. The duplex microstructure gives them impressive tensile and yield strength—almost double that of regular austenitic stainless steels—while still providing good impact toughness and fatigue resistance. Fajar Metals guarantees that each bolt adheres to strict mechanical and dimensional standards, ensuring they perform exceptionally well under high temperatures, pressure, and corrosive conditions, whether onshore or offshore.
|
Material |
Specification |
Standards |
Size
|
Length |
|
Duplex Steel S31803
|
IS
BS
ASTM
|
ASTM / ASME – A/ SA 479 / 479 |
3 mm
to
200 mm
|
M02 to M30
|
|
Grade |
Tensile Strength
(MPa) min |
Elongation
(% in 50mm) |
Yield Strength
0.2% Proof (MPa) min |
Hardness
Rockwell C (HR C) |
|---|---|---|---|---|
| Duplex Steel Bolts S31803 |
621 |
25 |
448 |
21 max |
At Fajar Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Bolts in Jakarta, Indonesia, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Indonesia, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Duplex Steel S31803 bolts are widely used in demanding environments due to their high strength and corrosion resistance. Common applications include marine engineering, where they withstand harsh saltwater conditions, and chemical processing, where they resist aggressive substances. They are also employed in oil and gas industries for their durability under high pressure and temperature. Additionally, these bolts are used in structural applications, including bridges and buildings, where their robustness ensures long-term performance and safety.