Luois Metals stands out as a top-notch manufacturer and supplier of Duplex Steel S31803 Forgings right in Houston, USA. We take pride in delivering high-quality forged products that are designed for exceptional strength, toughness, and resistance to corrosion. Our Duplex Steel S31803 Forgings are crafted with precision to meet international quality standards, ensuring they have excellent dimensional accuracy and can perform reliably even in the toughest industrial settings. Thanks to their balanced duplex microstructure of austenite and ferrite, these forgings boast impressive mechanical strength and resistance to stress corrosion cracking, making them perfect for use in marine, oil & gas, chemical, and petrochemical industries. At Luois Metals, we promise consistent quality and timely delivery.
These Duplex Steel S31803 Forgings are made up of chromium, nickel, molybdenum, and nitrogen, which gives them remarkable resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. The duplex structure provides nearly double the strength of standard austenitic stainless steels while still maintaining good ductility and toughness. On the mechanical side, these forgings show high tensile strength, excellent yield strength, fatigue resistance, and durability, even under extreme pressure and corrosive conditions, making them ideal for 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.
You’ll find Duplex Steel S31803 Forgings widely used in industries that demand a blend of high strength and corrosion resistance. In the marine sector, they’re utilized in propeller shafts, seawater systems, and components for shipbuilding. The oil & gas industry relies on them for valves, flanges, piping, and offshore platforms. Chemical and petrochemical plants use them in heat exchangers, reactors, and various process equipment. They’re also found in construction, heavy machinery, and industrial frameworks. With their outstanding mechanical properties and corrosion resistance, Duplex Steel S31803 Forgings are a dependable choice for even the most demanding 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.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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