Accurate Metals and Alloys is highly acclaimed among several top manufacturers and distributors of stainless steel products, such as the Duplex Steel S31803 Plates, due to our perseverance in ensuring that our clientele receives only high-class products at an affordable rate. Although our products are cost-effective, we do not compromise on their quality and use advanced technological equipment and pure-grade raw materials for production. Known widely as chromium-based alloy, the duplex steel UNS S31803 plates contain the element chromium in bulk. Apart from the rise in the amount of chromium, an increase is also seen in the amounts of nickel and molybdenum, with the addition of nitrogen. All of the elements mentioned above contribute to the unique anti-corrosion property displayed by the duplex alloy plates and the hardness and strength for which they are renowned. Chromium is linked to the strength and the corrosion resistance the plates exhibit against several acids and acidic ions, apart from normal atmospheric corrosion. Molybdenum, present at 3.1%, also plays an active role in preventing pitted corrosion, especially in the presence of chloride ions.
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The functioning of the Duplex Steel 31803 Plates is characterized by heat resistance, corrosion resistance, fatigue resistance, strength, and many such impressive properties. The heat resistance it exhibits enables it to withstand excessively high-temperature conditions without letting stress corrosion affect its physical and chemical stability. Not only do they operate when temperatures rise, but they also effectively work in cold conditions with temperatures dropping down. The plates manifest appreciable corrosion resistance properties against a wide range of acids and liquid solvents, having the ability to operate in the presence of sulfur and chloride ions. Fatigue due to overworking is also tackled by the plates, making them durable and versatile even in the most strenuous conditions.
Due to the variety of properties and the adaptability of the duplex plates UNS S31803 to different operating environments, they are famously used in heat exchangers, biofuel plants, food processing, effluent scrubbers, chemical tanks, acetic acid distillation constituents, rotors, shafts, etc.
The quality of the products can get damaged during manufacturing even when we consider all the necessary precautions. It cannot be prevented, but the products we deliver manage to retain their integrity because of the ample amount of tests we conduct on the products before we dispatch them.
2B, 2D, BA NO (8), Cold rolled Plate (CR), Hot rolled Plate (HR), SATIN (Met with Plastic Coated), No.1 finish hot rolled, 1D, 2B, No.4, BA, 8K, satin, hairline, brush, mirror etc.
| 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 |
