Advantages and Disadvantages of Aluminum

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Aluminum is the most abundant metal and the third most abundant element in the earth's crust, after oxygen and silicon. It makes up about 8% by weight of the earth’s solid surface. Aluminum also chemically reactive to occur naturally as the free metal (Kobayashi et al, 2002). There are many applications of Aluminum in our daily life, such as construction machinery, aircraft construction, ship construction, home furnishing and electronics component. For the vehicle industry, Aluminum has established a worldwide position because of its advantages over the other competitive materials, like light weight, providing exceptional unit strengths (strength/density ratio), high corrosion resistance, low maintenance costs, good temperature resistance (even in arctic environments), ductile, easily joined by all commercial processes such as welding, brazing, or soldering, at the last, aluminum can be easily formed by all common processes, including extrusion (a major advantage) and can be recycled. Beside of the advantages, there are some disadvantages of Aluminum. First, Aluminums relatively ex...

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