Al Summan Metals, based in Dubai, UAE, distinguishes itself as a leading manufacturer and supplier of high-quality stainless steel products, placing particular emphasis on advanced alloys such as Duplex Steel S31803 Forging. Recognized for its precise engineering and robust metal solutions, Al Summan Metals serves a range of industrial fields, supplying long-lasting and corrosion-resistant materials. Duplex Steel S31803 Forging combines the advantages of ferritic and austenitic steels, offering outstanding performance even under demanding conditions. Backed by a firm dedication to quality, on-time delivery, and customer satisfaction, Al Summan Metals delivers reliable steel solutions that comply with international standards, serving infrastructure, oil and gas, chemical, and marine applications throughout UAE and beyond.
Duplex Steel S31803 Forging is a two-phase stainless steel made up of roughly 22% chromium, 5% nickel, 3% molybdenum, plus small quantities of nitrogen, manganese, and silicon. This distinctive combination achieves an ideal equilibrium between resistance to corrosion and mechanical strength. It delivers high yield strength (about 450–550 MPa) and tensile strength (roughly 620–850 MPa), together with outstanding resistance to stress corrosion cracking. Its microstructure is close to 50% austenite and 50% ferrite, which gives it exceptional toughness, fatigue resistance, and dimensional stability. Hardness generally ranges from 280–330 HB, making it well suited for demanding forging uses.
| 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 forgings usually have a maximum service temperature of about 300°C (572°F). Above this point, the material can suffer from decreased strength and increased vulnerability to stress corrosion cracking.
Duplex Steel S31803 forgings come in a range of sizes, with diameters spanning from 10 mm to 800 mm, and in shapes such as round, square, billets, blocks, and custom configurations, depending on application requirements.
Yes, S31803 Duplex Steel forgings show strong resistance to corrosion, particularly in chloride-heavy conditions. They provide outstanding defense against pitting, crevice, and stress corrosion cracking, which makes them well-suited for demanding industrial uses.
Duplex Steel S31803 Forging is widely applied across industries that demand both strong corrosion resistance and high strength. It suits chemical processing equipment, pressure vessels, and heat exchangers perfectly, particularly in settings loaded with chlorides or acids. This alloy also serves oil and gas pipelines, marine structures, desalination plants, and pulp and paper production, where lasting performance under stress and corrosive exposure matters greatly. Its outstanding ability to withstand stress corrosion cracking and pitting, combined with strong mechanical properties, makes it a preferred choice for challenging environments.
We supply products accompanied by both mill test certificates and third-party test certificates, guaranteeing the highest standards of quality and compliance.
Al Summan Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Dubai, UAE
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