Rupal Metals stands out as a top manufacturer and supplier of Duplex Steel S31803 Forgings, delivering strong and corrosion-resistant alloy solutions right from Delhi, India. This nitrogen-enhanced duplex stainless steel is celebrated for its impressive strength and remarkable resistance to pitting, stress corrosion cracking, and crevice corrosion. At Rupal Metals, we offer custom-forged S31803 components in a variety of shapes and sizes, all crafted to meet international standards and tailored to our clients’ specific needs. Our Duplex Steel S31803 forgings are widely utilized in marine, chemical, and oil & gas sectors, ensuring high performance and reliability in tough environments that demand both mechanical strength and corrosion resistance.
Duplex Steel S31803 is made up of about 22% chromium, 5–6% nickel, 3% molybdenum, and a touch of nitrogen. This dual-phase alloy brilliantly merges the strength of ferritic steels with the corrosion resistance of austenitic grades. It boasts a yield strength of around 450 MPa, which is nearly double that of standard austenitic stainless steels, while also maintaining excellent toughness and weldability. S31803 excels in resisting chloride-induced stress corrosion, erosion, and fatigue, making it perfect for aggressive and high-pressure settings. Plus, the alloy keeps its performance intact across a wide range of temperatures and chemical exposures.
| 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 |
The maximum operating temperature for Duplex Steel S31803 forgings is typically around 300°C (572°F). Beyond this temperature, the material may experience reduced strength and susceptibility to stress corrosion cracking.
Duplex Steel S31803 forgings are available in various sizes, including diameters ranging from 10 mm to 800 mm, and shapes like round, square, billets, blocks, and custom configurations, based on application needs.
Yes, S31803 Duplex Steel forgings are highly resistant to corrosion, especially in chloride-rich environments. They offer excellent protection against pitting, crevice, and stress corrosion cracking, making them ideal for harsh industrial applications.
Rupal Metals’ Duplex Steel S31803 Forgings find their place in various industries, including oil & gas, marine, chemical processing, desalination, and paper & pulp. You’ll often see them in applications like flanges, shafts, valve bodies, pump parts, heat exchanger components, and pressure vessels. Thanks to its high strength and exceptional corrosion resistance, it’s particularly well-suited for offshore platforms, subsea equipment, and high-pressure environments.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
Copyright 2024 Rupal Metals. All rights reserved
