Sadiki Metals located in Kinshasa, Congo, is a top-notch manufacturer and distributor of high-performance Duplex Steel Forgings. The company is known to bring to the market strength, corrosion resistance, and durability products that conform to international standards. By utilizing the latest forging technology and carrying out strict quality assurance, Sadiki Metals is able to deliver exceptional precision and reliability in every unit. The organization, through its commitment to innovation, technical excellence, and customer satisfaction, caters to various industries such as oil and gas, chemical processing, marine, and power generation, by providing tailored Duplex Steel Forgings that are designed for challenging operational environments.
Duplex Steel Forgings consist mainly of 22–25% chromium, 4–7% nickel, 2–3% molybdenum, and the rest iron, with small quantities of nitrogen and manganese. They are made by mixing the properties of austenitic and ferritic stainless steels, hence they have very high tensile strength (typically 620–880 MPa) and yield strength (about 450–620 MPa). Duplex steel is extremely resistant to pitting, crevice, and stress corrosion cracking. Besides this, it has excellent toughness, high fatigue strength, and good weldability, thus it is very suitable for critical areas where resistance to corrosion and mechanical endurance are required.
| 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 have found extensive applications where corrosion resistance and mechanical strength of the highest order are the main requirements in industries. For example, they are suitable applications in chemical processing, oil and gas exploration, desalination plants, and marine environments. Moreover, they can be used in flanges, shafts, rings, fittings, and pressure vessel components as the most common applications. Besides that, the pulp and paper industry can utilize them in the handling of aggressive chemicals, while offshore and subsea operations are able to benefit from their resistance to harsh, chloride-rich environments. Eventually, the perfect combination of toughness, strength, and resistance to corrosion of Duplex Steel Forgings makes them indispensable for high-performance, long-life industrial components.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Sadiki Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kinshasa, Congo
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