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Based in Cape Town, Cape Town, Themba Nickel Alloys is a trusted manufacturer and supplier of high-performance alloy materials, including top-notch Duplex Steel S31803 Coils. Renowned for their exceptional product quality, precise engineering, and prompt delivery, Themba Nickel Alloys offers coil solutions designed to meet the demands of industries that operate in tough and high-stress environments. Their Duplex Steel S31803 Coils are produced in line with international standards, making them perfect for applications where both strength and corrosion resistance are essential. With a solid technical foundation and a customer-centric approach, Themba Nickel Alloys caters to clients throughout South Africa and beyond.
Standard ASTM A240 / ASME SA240
Range 5mm To 150mm
Width 1000mm / 1219mm /1250mm / 1500mm / 2000mm
Length 2000 mm / 2440 mm / 2500 mm / 3000 mm / 6000 mm.
Surface Finishing Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated)
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 |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| S31803 | 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
At Themban Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Coils in Cape Town , South Africa, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Cape Town, 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 Coils widely utilized in sectors like oil and gas, chemical processing, marine, desalination, and pulp and paper. They’re perfect for applications in heat exchangers, pressure vessels, storage tanks, pipelines, and structural components that are exposed to seawater or harsh chemicals. In offshore and coastal settings, these coils effectively resist corrosion and mechanical stress, ensuring long-lasting performance and minimizing maintenance needs. Their impressive strength-to-weight ratio, paired with corrosion resistance, makes them a go-to choice for many industries.
