Neil Metals, located in Kolkata, India, has built a solid reputation as a reliable manufacturer and supplier of top-notch Duplex Steel Forgings. They cater to industries that require outstanding corrosion resistance, high strength, and durability. Renowned for their precision engineering and commitment to global standards, Neil Metals provides Duplex Steel forgings that excel in tough and corrosive environments. With state-of-the-art manufacturing facilities and rigorous quality control measures, the company serves clients in the oil and gas, petrochemical, marine, and power sectors. Neil Metals is dedicated to ensuring timely delivery, offering customized dimensions, and providing dependable service, making them a go-to source for essential forged components across various industries.
Duplex Steel Forgings consist of about 22–25% chromium, 4.5–7% nickel, and 2.5–3.5% molybdenum, along with nitrogen and manganese, with the remainder being iron. This unique dual-phase (ferritic-austenitic) alloy structure grants it remarkable mechanical properties, including a tensile strength ranging from 620–800 MPa and a yield strength of 450–550 MPa. Duplex steel is known for its exceptional resistance to stress corrosion cracking, pitting, and crevice corrosion. It also retains good weldability and toughness, even in low temperatures. These characteristics make Duplex Steel forgings perfect for components that face aggressive media and high mechanical stress.
| 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 applications that demand a blend of high strength and excellent corrosion resistance. In the oil and gas sector, they are commonly used in valves, flanges, manifolds, and subsea equipment. The marine industry utilizes them for propeller shafts, pumps, and seawater handling systems. In chemical processing, Duplex forgings are essential for heat exchangers, reactors, and storage tanks that come into contact with harsh chemicals. Power plants rely on them for boilers, pressure vessels, and steam systems. Their resistance to chloride-induced corrosion and impressive mechanical performance make Duplex Steel Forgings ideal for critical applications in challenging environments.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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