Adinox Overseas is a trusted name in the global stainless steel industry, known for offering high-performance and durable sheet metal solutions for critical applications. One of the standout offerings from our extensive inventory is the Duplex Steel S31803 Sheets, engineered to deliver exceptional strength, corrosion resistance, and longevity in demanding environments. These sheets are manufactured using top-grade duplex stainless steel, also known by its UNS S31803 designation and corresponding ASTM A240 standard.
At Adinox Overseas, we offer Duplex Stainless Steel Sheets S31803 in a wide variety of thicknesses, widths, and finishes to cater to the unique requirements of our global clientele. Each sheet is produced under strict quality controls and comes with complete mill test certification, ensuring traceability and compliance with industry norms. Our in-house processing capabilities enable us to deliver customized solutions, including cut-to-size sheets and surface finishes like 2B, No. 1, No. 4, and BA.
In terms of specifications, UNS S31803 falls under the ASTM A240 standard for chromium and chromium-nickel stainless steel plate, sheet, and strip for pressure vessels and general applications. This makes it suitable for high-pressure environments, especially where chloride-induced corrosion is a concern. The dual-phase structure provides better resistance to erosion and fatigue, contributing to the extended lifespan of the components made from this alloy.
The Duplex Steel S31803 is a general-purpose duplex stainless steel grade that contains both useful properties of both austenitic and ferritic stainless steels. With its high mechanical property and high corrosion resistant feature, such plates and sheets exhibit high strength, high resistivity to stress corrosion cracking, and high weldability. With such a specific make, Duplex S31803 is an ideal choice for industries that require strong and long-lasting materials for extreme environments.
| Standard | ASME SB709 / ASTM B709 |
|---|---|
| Plate Width | 1219mm / 1000mm / 1500mm / 1250mm / 2000mm |
| Length | 2440mm / 2000mm / 3000mm / 2500mm / 6000mm |
| Thickness | 0.1mm - 12mm Thk |
| Hardness | Hard, Soft, Quarter Hard, Half Hard, Spring Hard etc. |
| Finish | Cold Rolled Sheet (CR), Hot Rolled Plate (HR) |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 21.0 – 23.0 | 2.50 - 3.50 | 4.50 – 6.50 | 0.8 – 0.20 | 63.54 min |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
|---|---|---|---|---|
| S31803 | 7.8 | 0.281 | 1350 | 2460 |
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