Copper forgings have a wide range of uses in engineering applications, and the selection of the appropriate copper alloy can be considered according to the needs of the following aspects: Strength requirements: Different engineering applications have different strength requirements for materials. In general, copper alloys containing nickel, zinc, tin and other alloying elements have high strength and hardness, such as brass, tin bronze and so on. For some applications with low load and high thermal conductivity requirements, pure copper or copper alloys containing small amounts of tin and phosphorus are also a better choice. Corrosion resistance requirements: If copper forgings need to be used in corrosive environments, such as seawater, chemical media, etc., then corrosion resistance becomes an important consideration. In this case, copper alloys containing aluminum, tin, phosphorus and other elements (such as aluminum bronze, phosphorus bronze) will be more resistant to corrosion. Electrical conductivity requirements: Copper is a good conductive material, but the addition of certain alloying elements may reduce electrical conductivity. If copper forgings need to be used in electrical or electronic equipment, electrical conductivity is an important factor. In this case, pure copper or copper alloys containing trace alloying elements (such as beryllium copper) can maintain the electrical conductivity to the greatest extent. Thermal conductivity requirements: For some thermal applications such as radiators and heat exchangers, thermal conductivity is a key factor. In general, copper alloys containing high specific heat and high thermal conductivity (such as aluminum-copper alloys, platinum bronze, etc.) can provide good heat conduction properties. Processing performance requirements: Copper alloys have good malleability and machinability, but the processing performance of different alloys is not the same. In general, brass and bronze containing alloy elements such as zinc and tin have good malleability and are suitable for forging complex shapes. Alloys containing impurities such as nickel and aluminum are more suitable for machining. In summary, according to the specific needs and application environment, the selection of appropriate copper alloy materials can meet the requirements of different aspects. In the actual selection, in addition to considering the above factors, it is also necessary to consider factors such as material cost, availability and manufacturing process.
