Home > Duplex Steel > Duplex Steel S31803 Sheet and Plates
Aisha Nickel Alloys stands out as a trusted manufacturer and supplier of Duplex Steel S31803 Sheets and Plates in Muscat, Oman. They cater to a diverse array of industrial sectors, both regionally and internationally. Known for their commitment to quality, the company provides materials that meet global standards and the rigorous demands of various projects. The Duplex Steel S31803 sheets and plates from Aisha Nickel Alloys are highly regarded for their impressive mechanical strength, durability, and resistance to corrosion. With a strong emphasis on quality control, competitive pricing, and timely delivery, they offer reliable material solutions for critical engineering, structural, and industrial needs.
Duplex Steel S31803 is a unique chromium-nickel-molybdenum alloy that features a well-balanced austenitic and ferritic microstructure. Typically, its chemical makeup includes around 22% chromium, 5–6% nickel, about 3% molybdenum, and added nitrogen to boost strength and corrosion resistance. When it comes to mechanical properties, S31803 boasts high yield and tensile strength, nearly double that of standard austenitic stainless steels. It also provides good ductility, toughness, and exceptional resistance to stress corrosion cracking, pitting, and crevice corrosion, even in harsh 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 Aisha Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex S31803 Sheets and Plates in Muscat, OMAN, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the OMAN, 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.
The applications for Duplex Steel S31803 sheets and plates are extensive, particularly in areas where strength and corrosion resistance are crucial. They are frequently used in oil and gas processing equipment, offshore structures, heat exchangers, pressure vessels, and storage tanks. Additionally, these products find widespread use in chemical processing plants, desalination facilities, marine engineering, and the pulp and paper industry. Their outstanding resistance to chloride-induced corrosion makes them perfect for seawater systems, pipelines, and structural components that face tough and corrosive conditions.