ARK Stainless Inc. is a trusted manufacturer and supplier of high-quality Copper Nickel Fasteners, designed to offer superior strength, excellent corrosion resistance, and outstanding performance in harsh marine and industrial environments. These fasteners are widely used in industries such as marine engineering, shipbuilding, offshore oil & gas, and desalination plants, where resistance to biofouling, stress corrosion cracking, and seawater corrosion is crucial.
Our Copper Nickel Fasteners are crafted using premium grades like Copper Nickel 70/30 Fasteners (C71500) and Copper Nickel 90/10 Fasteners (C70600), ensuring remarkable mechanical strength, excellent thermal conductivity, and long-lasting durability. Available in various types such as bolts, nuts, washers, screws, and studs, these fasteners are manufactured according to international standards like ASTM B151 / ASME SB151 and dimensional specifications such as DIN, ISO, ASTM, JIS, BS, and IS.
Copper Nickel Fasteners from ARK Stainless Inc. are ideal for high-pressure and high-temperature applications, delivering exceptional performance even in the most challenging environments. Each fastener undergoes rigorous quality testing to ensure superior reliability, corrosion resistance, and a long service life, making them a preferred choice for critical industrial operations.
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
|---|---|---|---|---|---|---|
| Copper Nickel 70/30 | 65 min | 1.0 max | 0.05 max | 29-33 max | 0.4-1.0 max | 1 max |
| Copper Nickel 90/10 | 88.6 | 1.0 max | 0.05 max | 9 - 11 max | 1.8 max | 1 max |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|---|---|
| Cupro Nickel 70/30 | 0.323 lb/in³ at 68°F | 2260°F | 50000 psi | 20000 psi | 30% |
| Cupro Nickel 90/10 | 0.323 lb/in³ at 68°F | 2260°F | 50000 psi | 20000 psi | 30% |
Copper Nickel 70/30 Fasteners are extensively utilized across various industries, including marine engineering, chemical processing, and power generation, due to their superior mechanical properties and excellent corrosion resistance. These fasteners perform exceptionally well in harsh environments, including offshore and industrial installations, where high durability and dependability are critical.
Copper Nickel 70/30 Fasteners are manufactured using premium-grade Copper Nickel Cu-Ni 70/30 (C71500) material, offering outstanding resistance to alkaline solutions and neutral environments. They exhibit superior thermal conductivity, making them excellent conductors of heat, while their electrical conductivity remains significantly lower compared to other materials. Although they are prone to galvanic erosion when in contact with other metals in acidic environments, their toughness, strength, and corrosion resistance at elevated temperatures make them highly desirable for critical operations.
The chemical and mechanical properties of Copper Nickel 70/30 Fasteners significantly enhance their suitability for demanding applications. These fasteners are rigorously tested for tensile strength, chemical composition, hardness, and microstructural integrity to ensure consistent high-quality performance, ensuring they meet the stringent requirements of critical industrial sectors.
| STANDARD | UNS | WNR. |
|---|---|---|
| Copper Nickel 70/30 | C71500 | 2.0882 |
Copper Nickel 90/10 Fasteners are widely used in industries such as power generation, gas processing, and pharmaceuticals, where high-quality and reliable components are essential for critical operations. These fasteners are engineered for exceptional performance under harsh conditions, offering superior strength, durability, and corrosion resistance.
The Copper Nickel 90/10 Fasteners are composed of 90% copper and 10% nickel, along with additions of iron and manganese that enhance their overall strength and toughness. These fasteners are designed to offer excellent resistance to corrosive environments, including seawater, and perform well in high-temperature applications.
Copper Nickel 90/10 Fasteners inherit several key properties from the alloy, including exceptional corrosion resistance, high ductility, remarkable durability, and high tensile strength. Their ability to resist stress corrosion cracking and withstand harsh industrial conditions makes them an ideal choice for demanding applications.
Manufactured according to international specifications, these fasteners undergo rigorous testing to ensure their reliability and performance. This includes tensile testing, corrosion resistance testing, and other quality checks. Complete documentation is provided for each batch, including commercial invoices, raw material reports, heat treatment charts, and guarantee letters, ensuring full transparency and trust in the product's quality.
| STANDARD | UNS | WNR. |
|---|---|---|
| Copper Nickel 90/10 | C70600 | 2.0872 |
