Dhruv Metals is an established manufacturer and supplier of Duplex Steel S31803 Forgings in Hyderabad, India. This forging-grade duplex stainless steel combines strength and corrosion resistance, making it suitable for pressure equipment and structural components. It contains both ferritic and austenitic microstructures, giving it double the strength of standard stainless steel. Forgings made from S31803 show superior resistance to stress corrosion cracking, pitting, and fatigue. Dhruv Metals provides these forgings in custom shapes such as flanges, blocks, rings, and shafts, following ASTM A182 specifications for use in marine, chemical, and petrochemical industries.
Duplex S31803 includes 21–23% chromium, 4.5–6.5% nickel, 2.5–3.5% molybdenum, and balanced iron, with nitrogen enhancing corrosion resistance. The alloy has a tensile strength of 620–800 MPa, yield strength above 450 MPa, and elongation of around 25%. It shows excellent fatigue strength and resistance to stress corrosion cracking due to chlorides. These forgings keep their toughness at low temperatures while resisting high pressures. The balanced structure ensures stability when welded, and their strength makes them perfect for dynamically loaded applications in corrosive 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 |
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.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Dhruv Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hyderabad , India
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