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Introduction Copper is an important engineering material since it is widely used in its pure state and also in alloys with other metals. In its pure state it is the most important material in the electrical industry. It has high electrical conductivity and corrosion resistance and is easy to fabricate. It has reasonable tensile strength, controllable annealing properties and general soldering and joining characteristics. Alloyed copper in the form of brass, and bronze is used extensively throughout the mechanical engineering industry.Brass The copper-zinc brasses consist of a series of alloys of copper up to about 40% Zinc. The property of the alloy varies as the zinc percentage changes. One of the most useful alloys is the 70%Cu and 30% Zn alloy is famed for its deep-drawing ability. This alloy is known as catridge brass. It is also used for radiator cores, tanks, lamp fixtures etc. Copper-Zinc brasses containing additional elements such as tin, aluminium, silicon, manganese, nickel, and lead are referred to as "alloy brasses". These alloys alloy further property enhancements to enable the brasses to be used for a wider range of applications.Tin Bronze Alloys consisting of principally copper and tin are properly called "tin bronzes". since phosphorous is usually added to these alloys as a deoxidising agent during casting, the tin bronzes are commercially known as "phosphur bronzes". These alloys possess desireable properties such as high strength, wear resistance, and good sea water resistance. |
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Last Updated 05/11/2001