Home > Duplex Steel > Duplex Steel S31803 Nuts
Xuan Nickel Alloys, a trusted manufacturer and supplier based in Da Nang, Vietnam, proudly offers top-notch Duplex Steel S31803 Nuts that are built to last. These nuts are designed with durability, strength, and outstanding corrosion resistance in mind. Crafted with precision and adhering to international standards, they provide reliable fastening solutions for tough applications in challenging environments. You can find them in various styles, including hex nuts, lock nuts, coupling nuts, and flange nuts, all ensuring robust and enduring connections. They’re commonly used across industries like chemical processing, oil and gas, marine, desalination, and power generation, where dependable performance is a must.
|
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
|
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 Xuan Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Nuts in Da Nang, Vietnam, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Vietnam, 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 utilized in sectors that demand corrosion-resistant and high-strength fasteners. In chemical and petrochemical facilities, you’ll find them in heat exchangers, process equipment, and piping systems that face harsh chemicals. The oil and gas industry relies on them for offshore platforms, refineries, and subsea pipelines, where resistance to seawater and sour gas is crucial. Marine and desalination plants use these nuts in pumps, valves, and structural assemblies that operate in chloride-rich environments. Additionally, power generation facilities depend on them for turbines, boilers, and high-pressure systems, ensuring they can withstand extreme conditions while maintaining long-term reliability and safety.
