Home > Copper Nickel > Copper Nickel 70/30 Nuts
Fajar Metals, a reputable manufacturer and supplier located in Jakarta, Indonesia, specializes in high-quality Copper Nickel 70/30 Nuts designed for exceptional durability and corrosion resistance in tough marine and industrial settings. Made from a blend of 70% copper and 30% nickel, these nuts are highly resistant to seawater, brine, and biofouling, making them perfect for offshore, shipbuilding, and desalination projects. Fajar Metals offers Cu-Ni 70/30 nuts in a variety of sizes, threads, and configurations, all meeting international standards. With dependable performance, rigorous quality control, and prompt delivery, Fajar Metals meets the critical fastening needs of industries worldwide.
Copper Nickel 70/30 Nuts consist of 70% Copper (Cu) and 30% Nickel (Ni), with minor additions of Iron (Fe) and Manganese (Mn) to boost mechanical strength and corrosion resistance. These nuts show remarkable resistance to high-velocity seawater, stress corrosion cracking, and erosion. Typical mechanical properties include a tensile strength ranging from 350 to 450 MPa, yield strength between 150 and 200 MPa, and good elongation. The alloy’s stability in harsh conditions makes these nuts a reliable choice for securing components that face extreme temperatures, pressures, and corrosive fluids.
| Specifications | : | ASTM B 151 ASME SB 151 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 70/30 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Cu-Ni 70/30 | Cu | Pb | Mn | Fe | Zn | Ni |
| 88.6 min | 0.05 max | 1.0 max | 1.8 max | 1 max | 9-11 max |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.1 g/cm3 | 1443 °C (2430 °F) | Psi – 35,000, MPa – 241 | Psi -80,000, MPa -551 | 30 % |
At Fajar Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Copper Nickel 70/30 Nuts in Jakarta, Indonesia, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Indonesia, 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.
Copper-nickel 70/30 alloys are widely used in the marine and offshore industries due to their resistance to seawater corrosion and exceptional marine environments They are commonly found in shipbuilding, naval vessels and coastal platform, where it protects critical infrastructure . These nuts are used in chemical plants and water treatment plants, where their resistance to corrosion and pressure ensures reliable performance and their durability makes them suitable for high pressures and high-temperature applications in harsh environments.
