Home > Duplex Steel > Duplex Steel S31803 Nuts
Fajar Metals, a trusted name in Jakarta, Indonesia, specializes in manufacturing and supplying high-quality Duplex Steel S31803 Nuts. These nuts are crafted to excel in demanding, high-stress, and corrosive environments. You’ll find them in crucial fastening applications across a variety of industries, such as oil & gas, chemical processing, desalination, marine engineering, and offshore installations. The Duplex S31803 material boasts impressive mechanical strength and exceptional resistance to corrosion caused by chlorides. Fajar Metals offers these nuts in an array of sizes, types (including hex, heavy hex, and lock nuts), and thread configurations, ensuring secure and vibration-resistant fastening for flanged joints and structural assemblies.
|
Material
|
Specification
|
Standards |
Size
|
Length
|
|
Duplex Steel S31803 |
IS BS ASTM |
ASTM / ASME – A/ SA 479 / 479
|
3 mm |
M02 to M30 |
| Cr | N | Ni | C | Mn | Si | P | S | Mo | |
|---|---|---|---|---|---|---|---|---|---|
| S31803 | min: 21.0 max: 23.0 | min: 0.08 max: 0.20 | min: 4.5 max: 6.5 | 0.03 max | 2.0 max | 1.0 max | 0.03 max | 0.02 max | min: 2.5 max: 3.5 |
| S32205 | min: 22.0 max: 23.0 | min: 0.14 max: 0.20 | min: 4.5 max: 6.5 | 0.03 max | 2.0 max | 1.0 max | 0.03 max | 0.02 max | min: 3.0 max: 3.5 |
Grade | Tensile Strength (MPa) min | Elongation (% in 50mm) | Yield Strength 0.2% Proof (MPa) min | Hardness Rockwell C (HR C) |
|---|---|---|---|---|
UNS-S 31803 | 650-880 | 25 | 448 | |
UNS-S 32205 | 621 | 25 | 448 | 21 max |
At Fajar Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Nuts 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 nuts are widely used in demanding environments due to their high strength and corrosion resistance. Common applications include marine and offshore structures, chemical processing equipment, and oil and gas industry components. They are ideal for use in pumps, valves, and flanges, where resistance to chloride-induced stress corrosion and pitting is critical. Their robust properties also make them suitable for high-pressure and high-temperature applications, ensuring reliable performance and extended service life.
