Home > Duplex Steel > Duplex Steel S31803 Sheet and Plates
AtMarsh Nickel Alloys, a premier manufacturer and distributor based in Canberra, Australia, we specialize in providing top-grade Duplex Steel S31803 sheets and plates. Renowned for their exceptional strength, corrosion resistance, and durability, our Duplex Steel products are designed to meet the rigorous demands of industries such as construction, marine, and chemical processing. With a commitment to quality and customer satisfaction, we ensure that our sheets and plates adhere to the highest standards, making them ideal for a wide range of applications. TrustMarsh Nickel Alloys for reliable, high-performance Duplex Steel solutions tailored to your needs.
Specifications : ASTM A240 / ASME SA240
Dimensions : ASTM, ASME, and API
Width : 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Thickness : 4mm-100mm
Length : 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Surface Finish : 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, chequered, embossed, hairline, sand blast, Brush, etching, Hot rolled plate (HR), Cold rolled sheet (CR), SATIN (Met with Plastic Coated) etc
Hardness : Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc.
Form : Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc.
| 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 | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S31803 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
These **Duplex Steel S31803 Sheets and Plates** are created from a well-balanced duplex stainless steel alloy, which merges austenitic and ferritic microstructures. This unique combination provides outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. They boast high tensile and yield strength, remarkable toughness, and fatigue resistance, ensuring they maintain their structural integrity even in aggressive chemical or thermal environments. Each sheet and plate undergoes precision rolling, heat treatment, and thorough inspection to guarantee dimensional accuracy, metallurgical consistency, and a smooth surface finish, making them ideal for critical industrial applications.
Contact us to get a quick quote for your requirement.
When it comes to **Applications of Duplex Steel S31803 Sheets and Plates**, they are utilized in process vessels, heat exchangers, pressure equipment, and structural components across the oil and gas, chemical, and petrochemical sectors. In marine and offshore settings, you’ll find them in seawater systems, pump housings, and structural supports. Power generation facilities use these materials in boilers, condensers, and turbine components that face corrosive or high-temperature conditions. The blend of mechanical strength, corrosion resistance, and long-term durability makes Duplex Steel S31803 Sheets and Plates the go-to choice for high-performance industrial applications.
