Semih Metals, located in Istanbul, Turkey, stands out as a leading manufacturer and supplier of top-notch Duplex Steel Forgings. With a solid reputation in metallurgy and precision forging, Semih Metals serves industries that need robust, corrosion-resistant components, such as oil & gas, chemical processing, marine, and power generation. The Duplex Steel Forgings produced by Semih Metals are crafted under strict quality controls and adhere to international standards. These forgings offer remarkable strength and resistance to tough environments, making them perfect for critical applications where performance and reliability are essential.
Typically, Duplex Steel Forgings are made from grades like UNS S31803 and S32205, which boast a well-balanced microstructure of austenite and ferrite. The alloy is composed of about 22% chromium, 5–6% nickel, 3% molybdenum, and some nitrogen, resulting in impressive tensile strength (up to 850 MPa) and excellent resistance to pitting, crevice, and stress corrosion cracking. The forging process enhances the grain structure, boosting toughness, fatigue resistance, and overall mechanical properties. These forgings also provide good weldability, making them suitable for applications that demand high structural integrity in corrosive and high-pressure 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. |
Verify duplex steel forgings' quality by checking certifications, such as ASTM or ISO standards, conducting material testing (e.g., tensile, hardness, corrosion resistance), and inspecting for consistent dimensions, surface finish, and proper labeling.
Yes, duplex steel forgings are highly resistant to corrosion due to their unique blend of austenitic and ferritic microstructures, providing excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.
The maximum operating temperature for duplex steel forgings typically ranges from 250°C to 300°C (482°F to 572°F), depending on the specific grade and application, to maintain optimal mechanical properties.
Duplex Steel Forgings find extensive use in creating essential components like valve bodies, pump shafts, flanges, fittings, rings, and parts for pressure vessels. Their exceptional corrosion resistance makes them ideal for offshore platforms, chemical reactors, desalination plants, and power generation equipment. These forgings can handle chloride-rich environments and significant mechanical stress, ensuring they last over time. Semih Metals offers Duplex Steel Forgings in tailored sizes and shapes, meeting the complex needs of various industries with high-quality, reliable components designed for demanding operational conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Semih Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Istanbul, Turkey
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