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Based in the vibrant industrial heart of Kinshasa, Okoye Nickel Alloys has earned its reputation as a trusted partner for businesses requiring materials that can stand up to the toughest conditions. We specialize in providing high-performance Duplex Steel Fasteners, engineered for those critical applications where failure is not an option. Our commitment extends beyond supply to building lasting relationships with our clients, ensuring they receive not just superior products but also the technical support and expertise needed for success in demanding environments.
Duplex Steel Fasteners are celebrated for their exceptional blend of strength and corrosion resistance, thanks to a balanced microstructure of austenite and ferrite. This unique composition, rich in chromium, nickel, and molybdenum, gives these fasteners a remarkable toughness. They offer nearly double the yield strength of standard austenitic stainless steels, allowing for more robust and often lighter designs. This combination of mechanical power and resistance to stress corrosion cracking makes them an incredibly reliable choice.
| Specifications | : | ASTM A182 / ASME SA182 |
| Size | : | 1/8″ NB TO 24″ NB |
| Standards | : | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | : | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | : | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Grades | : | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F6 |
| Phosphorus | Sulphur | Silicon | Carbon | Manganese | Nickel | Molybdenum | Nitrogen | Copper | Chromium |
|---|---|---|---|---|---|---|---|---|---|
| 0.035 % max | 0.02 % max | 0.80 % max | 0.03% Max | 1.20 % max | 6.00 – 8.00 % | 3.00 – 5.00 % | 0.24 – 0.32 % | 0.50 % max | 24.0 – 26.0 % |
| Grade | YS (MPa) | UTS (MPa) | % Elongation | Hardness(BHN) |
| UNS S32750 | 550 min. | 795 min. | 15 min. | 310 max. |
| UNS S32760 | 550 min. | 750 min. | 25 min. | 270 max. |
At Okoye Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Fasteners in Kinshasa, Congo, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Congo, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
The robustness of Duplex Steel Fasteners makes them indispensable in industries where safety and longevity are critical. You will find them securing vital structures in offshore oil and gas platforms, chemical processing plants, and desalination units, where they battle constant exposure to harsh chemicals and saline environments. They are equally vital in the construction of bridges and ships, as well as in demanding pulp and paper manufacturing. Essentially, any application that demands unwavering reliability from its components is a perfect fit for these advanced fasteners.
