Home > Duplex Steel > Duplex Steel S31803 Nuts
Wai Nickel Alloys, a well-respected manufacturer and supplier located in Naypyidaw, Myanmar, specializes in top-notch Duplex Steel S31803 Nuts that are built for outstanding performance, strength, and resistance to corrosion. These nuts are crafted to meet international standards, making them perfect for tough environments like chemical processing, marine applications, and the oil and gas industry. Thanks to cutting-edge manufacturing techniques and meticulous engineering, Wai Nickel Alloys guarantees that each nut delivers exceptional dimensional accuracy, durability, and a secure fit for critical applications that face high pressure and corrosive conditions.
The Duplex Steel S31803 Nuts are made from a unique dual-phase austenitic-ferritic stainless steel blend, striking a fantastic balance between strength and corrosion resistance. This alloy typically includes 22% chromium, 5–6% nickel, 3% molybdenum, and nitrogen, all of which work together to boost its resistance to pitting, crevice corrosion, and stress corrosion cracking in environments rich in chlorides. These nuts showcase impressive tensile and yield strength, remarkable toughness, and outstanding resistance to oxidation and fatigue, making them ideal for both high-stress and corrosive situations.
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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 Wai Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Nuts in Naypyidaw, Myanmar, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Myanmar, 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.
You’ll find Duplex Steel S31803 Nuts widely used in offshore structures, desalination plants, petrochemical industries, and power generation systems. They’re perfect for securing components in pipelines, pressure vessels, and heat exchangers that operate under extreme conditions. Their ability to fend off corrosion while maintaining mechanical integrity ensures they perform reliably and safely over time. With their sturdy construction, high strength, and excellent corrosion resistance, Duplex Steel S31803 Nuts are the go-to fastening solution for critical industrial applications that demand reliability and endurance.