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Copper And Aluminium - School Essays

Copper And Aluminium

Copper is an extremely important metal that has many uses. Coppers primary use is for making wire, as it is the best low cost conductor of electricity. About 60% of copper used is as wiring. Copper wire carries most of the electricity inside houses, factories, and office. Other uses of Copper include televisions, speakers, motors, and generators.
Copper can also be combined with other metals to form alloys such as Brass, which is used for instruments, screws, coins, marine hardware, and decorative objects, because it is extremely shiny when polished.. Copper can also be alloyed with tin to make Bronze. Bronze can be easily cast in large shapes, so is used for making statues. It also has a ...

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properties that make copper extremely useful include -

Conductivity - Silver is the only better conductor, but is too expensive for common use. Copper also conducts both electricity and heat extremely well, which makes it extremely useful for cooking utensils, radiators, and refrigerators.
Malleability - Copper is highly malleable. It does not crack when hammered, stamped, or forged, and can be worked when it is both hot and cold. It can be rolled into sheets less than 0.05mm thick. Cold rolling changes the physical properties of copper, and increases its strength.
Ductility - Copper has the ability to be drawn into thin wires without breaking. Copper rod, 1cm thick can be heated, rolled, and drawwn into wire that is thinner than a human hair.
Resistance to corrosion - Copper is quite resistant to corrosion, and doues not rust. This makes it suitable for water pipes. In damp air, it changes colour to a reddish brown. After long exposure it becomes coated with a green ...

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PAPER DETAILS

Added: 7/26/2007 03:09:59 AM
Category: Science & Nature
Type: Premium Paper
Words: 868
Pages: 4

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