Home > Duplex Steel > Duplex Steel S31803 Nuts
At Elvis Nickel Alloys, we specialize in providing premium Duplex Steel S31803 nuts, renowned for their exceptional strength and corrosion resistance. As a leading manufacturer and distributor based in Texas, USA, we cater to various industries, including marine, chemical, and industrial sectors. Our Duplex Steel S31803 nuts are engineered to withstand extreme conditions, ensuring reliable performance and durability. With a commitment to quality and customer satisfaction, we offer a comprehensive range of products to meet your specific needs. Trust Elvis Nickel Alloys for top-notch materials and unmatched service in the USA market.
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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 |
The Duplex Steel S31803 Nuts produced in Texas boast a well-balanced composition of about 22% chromium, 5-6% nickel, and 3% molybdenum, along with nitrogen and manganese. This alloy features a distinctive dual-phase microstructure of austenite and ferrite. Its mechanical properties include a minimum tensile strength of around 620 MPa and a yield strength of 450 MPa, ensuring impressive load-bearing capabilities. These nuts are highly resistant to pitting, crevice corrosion, and stress corrosion cracking, making them perfect for challenging environments that require outstanding mechanical integrity.
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The Duplex Steel S31803 Nuts from Texas are widely utilized across various industries due to their remarkable strength and corrosion resistance. They are crucial components in offshore platforms, desalination plants, chemical processing equipment, heat exchangers, and pressure vessels. Their ability to endure harsh conditions makes them ideal for marine applications and structural assemblies exposed to seawater and chloride-rich environments. Furthermore, Duplex Steel S31803 nuts are favored in oil & gas refineries, pulp & paper industries, and architectural structures that need reliable fasteners for long-lasting performance under demanding circumstances.
