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Copper And Aluminium
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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 inclu ....
Middle of essay ....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 fil.... |
Number of words: 868 |
Approximate pages: 4 |
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