Welcome to Maduka Metals, your trusted partner in Abuja for robust and reliable industrial solutions. We specialise in supplying and manufacturing high-quality Duplex Steel S31803 forgings, engineered to meet the demanding challenges of modern industry. Our commitment is to provide components that offer exceptional strength and longevity, supporting the growth and integrity of projects across Nigeria. When you choose Maduka Metals, you’re choosing a local source dedicated to excellence and the success of your operations.
The composition of Duplex Steel S31803 is a balanced blend of chromium, nickel, molybdenum, and nitrogen, which gives it a distinctive two-phase microstructure. This unique structure is the secret behind its impressive mechanical properties, including very high tensile and yield strength, excellent toughness, and outstanding resistance to stress corrosion cracking. It stands up remarkably well in harsh environments where standard stainless steels might fail, making it a material built for both power and endurance in critical applications.
| 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.
The uses for these forgings are extensive, particularly in sectors where failure is not an option. You’ll find them performing reliably in the oil and gas industry for components like valves and pump shafts, in chemical processing plants handling corrosive fluids, and in marine environments for offshore rigs and desalination equipment. Their strength and corrosion resistance also make them ideal for heavy-duty structural parts in construction and for high-stress components in the pulp and paper industry, proving their versatility and value.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Maduka Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Abuja, Nigeria
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