Home > Duplex Steel > Duplex Steel S31803 Sheet and Plates
At Nasir Nickel Alloys in Manama, Bahrain, Duplex Steel S31803 Sheets and Plates are engineered to offer superior strength, corrosion resistance, and durability for demanding industrial applications. Featuring a balanced austenitic-ferritic microstructure, this duplex stainless steel resists pitting, crevice corrosion, and stress-corrosion cracking, even in chloride-rich or chemically aggressive environments. The sheets and plates are precision-manufactured to ensure dimensional stability and consistent mechanical properties. Ideal for chemical processing, petrochemical, oil and gas, power generation, and marine industries, Duplex Steel S31803 Sheets and Plates deliver long-lasting, reliable performance in high-pressure and corrosive conditions.
Duplex Steel S31803 Sheets and Plates are composed of chromium, nickel, molybdenum, and nitrogen, forming a balanced austenitic-ferritic microstructure. This composition offers high tensile and yield strength, excellent toughness, and superior resistance to pitting, crevice corrosion, and stress-corrosion cracking. The sheets and plates maintain dimensional stability, mechanical integrity, and consistent performance under thermal cycling, high-pressure, and mechanically demanding conditions. Combining durability, corrosion resistance, and mechanical strength, Duplex Steel S31803 Sheets and Plates are ideal for critical applications where conventional stainless steels may fail under extreme chemical and mechanical environments.
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 |
At Nasir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex S31803 Sheets and Plates in Manama, Bahrain, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Bahrain, 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 Sheets and Plates are widely used in industries requiring corrosion-resistant, high-strength, and durable materials. They are essential in chemical and petrochemical plants for heat exchangers, pressure vessels, storage tanks, and piping systems exposed to acids, chlorides, and oxidizing chemicals. Oil and gas industries utilize these sheets and plates in offshore platforms, pipelines, and subsea structures. Power generation facilities employ them in condensers, boilers, and cooling systems. Marine and desalination plants rely on Duplex Steel S31803 Sheets and Plates for seawater-resistant components. They ensure structural integrity, long service life, and reliable performance in harsh, corrosive environments.
