Home > Duplex Steel > Duplex Steel S31803 Nuts
Ashraf Nickel Alloys stands out as a reliable manufacturer and supplier of Duplex Steel S31803 Nuts in Saudi Arabia, serving industries that require robust and corrosion-resistant fastening solutions. Known for its unique dual-phase austenitic-ferritic structure, Duplex Steel S31803 offers exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in environments rich in chlorides. Our nuts are crafted with precision and meet global quality standards, ensuring they perform reliably in critical applications. We proudly serve the oil & gas, petrochemical, marine, and construction sectors throughout Saudi Arabia, providing durable fastening products designed to endure tough operational conditions.
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Material
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Specification
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Standards |
Size
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Length
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Duplex Steel S31803 |
IS BS ASTM |
ASTM / ASME – A/ SA 479 / 479
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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 Ashraf Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Nuts in Riyadh, Saudi Arabia, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Saudi Arabia, 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.
