The Duplex Steel S31803 Coils boast excellent weldability, owing to a chemical composition that incorporates three robust materials: chromium, molybdenum, and nitrogen. With elevated concentrations of these elements, the DS S31803 Coils exhibit exceptional corrosion resistance properties, enhancing both pitting and crevice corrosion resistance. Notably, these coils maintain functional mechanical properties even in acidic and oxidizing environments. While the Duplex Steel S31803 grade demonstrates resistance to temperatures up to 150℃, slightly lower than other steel grades, it excels in resisting stress corrosion cracking.
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The presence of ferrite in the DS S31803 Coils structure contributes to their outstanding performance in toxic and caustic environments. These coils also exhibit resistance to oxidation at moderately elevated temperatures. However, caution is advised, as the DS S31803 Coils may become brittle when exposed to temperatures beyond 300℃ for even a short duration, leading to cracking and deformation. Therefore, it is recommended not to subject the coils to temperatures exceeding 300℃. Despite this limitation, DS 31803 Coils are well-suited for welding processes.
Accurate Metals & Alloys, headquartered in Mumbai, is deeply involved in the manufacturing, exporting, and stocking of Duplex Steel S31803 Coils and various other steel products. As reputable dealers of DS S31803 Coils and other stainless and duplex steel products, we prioritize quality and reliability.
Applications of Duplex Steel S31803 Coils span a wide range, including pressure vessels, tanks, piping, heat exchangers, tubing, effluent scrubbing systems, digesters, bleaching equipment, stock-handling systems, food processing equipment, chemical processing, transport and storage, gas processing system units, marine environments with high chloride levels, pulp and paper industry, and cargo tanks for ships and trucks.
In conclusion, the Duplex Steel S31803 Coils from Accurate Metals & Alloys offer a combination of superior material composition, corrosion resistance, and diverse applications, making them a reliable choice for various industries.
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex S31803 | 1.4462 | S31803 |
| 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 |
