UNS C70600 is a copper-nickel alloy containing 90% copper and 10% nickel. It also has small amounts of iron and manganese, which improve its strength and corrosion resistance. Adding nickel enhances seawater corrosion and biofouling resistance, making it an ideal material for marine applications.
UNS C70600 has many applications, including seawater pipelines, heat exchangers, condensers, valves, fittings, and pumps. It is also used in power plants, desalination plants, and offshore structures. The material's excellent resistance to biofouling and corrosion in seawater makes it ideal for marine applications such as shipbuilding, underwater engineering, and desalination equipment.
UNS C70600 has a Rockwell hardness of B75. Its softness allows easy fabrication and machining, making it a popular choice for complex components and structures.
UNS C70600 does not require heat treatment. The material can be annealed at 650°C for an hour to improve its machinability and formability. However, if heated above 800°C, the material can form a brittle phase that reduces its mechanical properties.
UNS C70600 can be welded using welding techniques such as TIG (Tungsten Inert Gas), MIG (Metal Inert Gas), and submerged arc welding. However, using Cu-Ni filler metals with more than 60% nickel content is recommended for better mechanical properties and corrosion resistance.
UNS C70600 is renowned for its excellent resistance to corrosion in seawater, brine solutions, and other aggressive chemical environments. It has a low biofouling rate, meaning it does not support marine organism growth on its surface. The material also has excellent resistance to stress corrosion cracking, making it ideal for long-term service in marine environments.
