Metal alloys which contains copper as the primary composition include brass(zinc added) and bronze(tin added to copper) .
Copper alloys have features of having good strength, ductility, thermal and electrical conductivity and great corrosion resistance. The hardest and strongest copper alloy is Beryllium Copper, and it has similar mechanical properties to a lot of high strength steels. However, it has better corrosion resistance.
Common Brass, Naval Brass, Brass astrolabe
The main alloying composition of copper alloys is zinc, which is also called Brass. Brass is used for decorating purposes because of its gold-like appearance. It can also be used in places where low friction is needed, including gears, locks, bearings and valves. Brass is suitable for zippers. More importantly, brass is widely used for musical instruments such as bells and horns where good workability and durability are required.
Bronze – Copper Alloy With Tin
Bronze has many alloys such as 90-10 Bronze and Phosphor Bronze.
Bronze is a kind of alloy consisting mainly copper, about 12-12.5% tin and other metals such as nickel, zinc, aluminum or manganese sometimes non metals such as silicon, phosphorus or arsenic, which makes bronze harder than copper and have ductility, stiffness and machinability. Bronze is used for making coins over a long time, and it is especially applicable to boat and ship fittings due to its toughness and resistance to salt water corrosion.
Copper Alloys – Wrought
Copper alloys have copper as the main composition and have corrosion resistance, which are used for radiators, coins, fittings, etc.