Okoye Nickel Alloys is a reliable manufacturer and supplier of Monel 400 Fasteners based in Kinshasa, Congo. They’re known for producing high-quality fasteners that boast impressive corrosion resistance, strength, and durability. These fasteners are meticulously engineered to perform consistently in tough industrial, marine, and chemical settings. Okoye Nickel Alloys offers a diverse selection of Monel 400 Fasteners, including bolts, nuts, screws, studs, and washers, all available in various sizes and thread types, and crafted to meet international quality standards. Their products cater to industries like chemical processing, marine engineering, offshore oil and gas, desalination, and power generation.
Monel 400 Fasteners are mainly made from a nickel-copper alloy, typically containing 66% nickel and 31–34% copper, along with trace amounts of iron and manganese to boost mechanical strength and corrosion resistance. This unique composition gives them outstanding resistance to seawater, alkalis, hydrofluoric acid, and other harsh substances. With a tensile strength of around 620 MPa, a yield strength of 275 MPa, and an elongation of 35%, these fasteners ensure excellent mechanical stability. They maintain their toughness, ductility, and dimensional integrity even at high temperatures while resisting stress corrosion cracking and embrittlement.
| Specification | ASTM F467 ASME SF467 |
| Dimensions | ASTM, ASME and API |
| Size | 5 mm To 500 mm Dia in 100 mm TO 6000 mm Length available with NACE MR 01-75. |
| Length | 100 mm To 3000 mm Long & Above |
| Finish | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Form | Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc |
| Test Certificates | EN 10204/3.1B |
| Raw Materials Certificate | |
| 100% Radiography Test Report | |
| Third Party Inspection Report, etc | |
| Origin & Mills | Japanese, Indian, USA, Korean, European, Ukraine, Russian, Kinshasa Congo |
| Grade | Ni | C | Al | Mn | Si | Fe | Cu | S |
| Monel 400 | 63.0 min | 0.3 max | 0.50 max | 2.0 max | 0.5 max | 1.0 – 2.5 | 28.0 – 34.0 | 0.02 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.8 g/cm3 | 1350 °C (2460 °F) | Psi – 35,000 , MPa – 240 | Psi – 80,000 , MPa – 550 | 40 % |
At Okoye Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Monel 400 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.
Monel 400 Fasteners are widely utilized in situations that demand corrosion-resistant, durable, and dependable fastening solutions. They’re perfect for marine and offshore equipment, seawater piping systems, chemical and petrochemical processing plants, desalination systems, heat exchangers, and power generation machinery. These fasteners create secure, maintenance-free connections in environments exposed to seawater, brine, and other corrosive substances. Thanks to their exceptional mechanical properties, corrosion resistance, and longevity, Monel 400 Fasteners deliver reliable performance in challenging industrial and marine applications.