Neil Metals is a well-respected manufacturer and supplier of Duplex Steel S31803 Bars and Rods, proudly based in Kolkata, India. The company has built a solid reputation for its dedication to quality and innovation, providing high-performance duplex steel products that align with global industry standards. With impressive strength, excellent corrosion resistance, and precise dimensional accuracy, Neil Metals’ Duplex S31803 Bars and Rods are widely utilized in critical sectors like oil and gas, chemical processing, marine, and power generation. They prioritize customer satisfaction by ensuring timely deliveries, competitive pricing, and tailored product solutions that meet specific industrial requirements.
Duplex Steel S31803 is a unique blend of austenitic and ferritic stainless steel, featuring a balanced mix of chromium (21–23%), nickel (4.5–6.5%), molybdenum (2.5–3.5%), and nitrogen, which boosts both strength and corrosion resistance. It boasts a tensile strength of around 95 ksi and a yield strength of about 65 ksi, along with remarkable fatigue and impact resistance. Its microstructure provides excellent resistance to stress corrosion cracking, especially in environments rich in chlorides. Additionally, S31803 is known for its good weldability and formability, making it perfect for components that face aggressive chemical exposure and mechanical stress in demanding industrial settings.
| Specifications | ASTM A182, ASME SA182 |
|---|---|
| Standard | DIN, ASTM, BS and all International Standards |
| Flat bar blocks | up to 27″ width and 15,000 lbs |
| Cylinders and sleeves | up to 50″ maximum O.D. and 65″ maximum length |
| Discs and hubs | up to 50″ diameter and 20,000 lbs |
| Rolled, hand forged or mandrel forged rings | up to 84″ maximum O.D. and 40″ maximum length |
| Rounds, shafts and step shafts | up to 144″ maximum length and 20,000 lbs |
| Forging Types | Impression Die Forging, Open Die Forging, Seamless Rolled Forging, Hot Forging, Cold Forging, Open die hammer forging, Impression die drop forging, Closed Die Forging, Press Forging, Upset Forging, Compression Forging, Swaging, Rotary Forging, Roll forging. |
| 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 |
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex Steel S31803 | 1.4462 | S31803 |
Duplex Steel S31803 Bars and Rods are widely used in applications that require both strength and corrosion resistance, particularly in harsh, chloride-laden environments. You can find them in offshore platforms, heat exchangers, pressure vessels, seawater desalination plants, pulp and paper processing, and structural components in marine engineering. These bars and rods are also essential in petrochemical refineries and food processing equipment, where hygiene, strength, and durability are crucial. The combination of mechanical toughness and corrosion resistance makes S31803 an outstanding choice for high-performance, long-lasting industrial components.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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