Neith Metals, located in Cairo, Egypt, stands out as a top manufacturer and supplier of premium stainless steel products, with a particular focus on Duplex Steel S31803 forgings. Known for blending innovation with precise engineering, Neith Metals caters to a variety of industries, such as oil and gas, chemical processing, and marine applications. Their dedication to high-quality standards, cutting-edge manufacturing techniques, and prompt delivery guarantees reliable and durable products that comply with international specifications. With a strong emphasis on customer satisfaction and technical know-how, Neith Metals remains a trusted ally for businesses in search of top-notch corrosion-resistant and high-strength duplex steel solutions for challenging industrial settings.
Duplex Steel S31803 is a bi-phase stainless steel that features nearly equal parts of austenite and ferrite. Its typical makeup consists of 22% chromium, 5–6% nickel, 3% molybdenum, along with trace amounts of nitrogen, manganese, and silicon. This well-balanced structure delivers remarkable strength—about double that of standard austenitic stainless steels—alongside outstanding corrosion resistance, particularly against stress corrosion cracking and pitting. S31803 boasts a tensile strength ranging from 620 to 850 MPa, a yield strength of 450 to 550 MPa, and an elongation of around 25%, making it perfect for applications that require both toughness and resilience in harsh chemical or marine environments.
| 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.
Duplex Steel S31803 forgings find extensive use in industries that demand high strength and exceptional corrosion resistance. Typical applications include oil and gas pipelines, pressure vessels, chemical processing equipment, heat exchangers, and marine structures that face seawater exposure. Its capability to resist chloride-induced corrosion and stress corrosion cracking makes it an excellent choice for desalination plants, offshore platforms, and pulp and paper machinery. Moreover, S31803 forgings are utilized in valves, flanges, and pumps where both mechanical strength and corrosion resistance are crucial.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neith Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Alexandria, Egypt
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