C70600 is a copper-nickel alloy, also known as B10 copper-nickel alloy, which is a high-performance material widely used in the fields of marine, chemical industry and ships. The following is a detailed description of C70600 copper-nickel alloy:
Chemical Composition
The main components of C70600 include:
Copper (Cu): 88.0% - 90.0
Nickel (Ni): 9.0% - 11.0
Iron (Fe): 1.0% - 1.8%
Manganese (Mn): 1.0% (maximum)
Other impurities (e.g. phosphorus, sulfur, carbon, etc.): usually not more than 0.05%.
Physical Properties
Density: 8.94 g/cm³
Melting point range: 1100°C - 1240°C
Electrical conductivity: 16.5% IACS (International Annealed Copper Standard)
Thermal conductivity: 29 W/m-K - 44 W/m-K
Mechanical properties
Tensile strength: 310 - 550 MPa
Yield strength: 110 - 275 MPa
Elongation: 30% - 50%
Hardness (Brinell): 80 - 150 HB
Corrosion resistance
C70600 copper-nickel alloy excels in seawater and acidic environments with excellent corrosion resistance. Its nickel content forms an oxide film that effectively protects against chloride attack, while trace additions of iron and manganese further enhance corrosion resistance. Pitting rates are typically less than 0.002 mm/year in seawater of varying salinity.
Processability
C70600 copper-nickel alloy has good machinability and is easy to hot and cold work:
Weldability: It can be welded by a variety of welding methods, such as TIG, MIG, etc. The strength of the alloy is hardly affected after welding.
Cold working properties: good ductility and plasticity, can be molded by cold rolling, cold drawing and other processes, suitable for the manufacture of thin-walled tubes and complex shapes of components.
Hot working performance: capable of hot working in the temperature range of 850°C to 950°C.
Fields of application
C70600 copper-nickel alloy is widely used in the following fields:
Marine engineering: for piping systems, condensers and heat exchangers for ships and offshore platforms.
Chemical equipment: used to manufacture corrosion-resistant mechanical parts and heat exchangers.
Seawater desalination system: used for manufacturing heat exchangers and pipelines in seawater desalination equipment.
Power engineering: for cooling systems in power stations.
Electronic industry: for the manufacture of electrical and electronic components.
Forms of supply
C70600 copper-nickel alloy is supplied in various forms, including seamless tubes, plates, strips, rods, flanges, pipe fittings and forgings.
C70600 copper-nickel alloy has become an indispensable material in the field of marine engineering and chemical industry due to its excellent performance.
