The Duplex Steel S31803 Coils have good welding ability. In the chemical composition of the Duplex Steel S31803 Coils, there is a combination of three strong materials like chromium, molybdenum, and nitrogen. These elements are higher in their concentrations, leading to the DS S31803 Coils attaining supremely well-resistant corrosion properties. These elements also improve the pitting resistance and crevice corrosion properties of the DS S31803 Coils. The DS S3180S Coils exhibit functional mechanical properties even in acidic and oxidizing atmospheres. The Duplex Steel S31803 grade is resistant to hot temperatures only up to 150℃, which is lower than the other steel grades. But these DS S31803 Coils are good at resisting stress corrosion cracking.
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There is the presence of the ferrite element in the structure of the DS S31803 Coils, which is a cause for the great performance of the DS S31803 Coils in toxic environments and caustic surroundings. The DS S31803 Coils are quite resistant to oxidation at moderately elevated temperatures. In terms of the embrittlement of the DS S31803 Coils, they are a bit fragile when these coils are exposed to temperature values beyond 300℃; even if it is only for a few hours, there will be cracking observed, and disfiguration can be spotted. Hence, we suggest our clients not expose the DS S31803 Coils to temperatures exceeding 300℃. These DS 31803 Coils prove to be great at welding processes too.
Accurate Metals & Alloys is a Mumbai-based establishment, and we are deeply entrenched in the manufacturing, exporting, and stocking of Duplex Steel S31803 Coils and all other steel products. We are the dealers of the DS S31803 Coils and the rest of the stainless and duplex steel products.
The Duplex Steel S31803 Coils are applied to the areas like pressure vessels, tanks, piping, heat exchangers, piping, tubing, effluent scrubbing systems, digesters, bleaching equipment, stock-handling systems, food processing equipment, chemical processing, transport and storage, gas processing system units, marine and other high chloride atmospheres, pulp and paper industry, cargo tanks for ships and trucks.
| 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 |
