Interesting facts about Aluminum
Approximately 8% of the Earth's solid surface (by weight) is aluminum.
Aluminum is the most abundant metal in the Earth's crust. It is also the third most abundant element in the Earth's crust - behind oxygen and silicon.
Aluminum does not occur in nature in its pure form. It is only found in gebinations with other minerals.
Aluminum is one of the most difficult metals to extract or purify. Consequently, aluminum metal wasn't isolated until the 1820s.
Aluminum has been produced in gemercial quantities for just over 100 years.
It is estimated that since 1972,some 16 million tons of aluminum cans have been recycled. These 785.6 billion aluminum cans placed end-to-end could stretch to the moon more than 249 times.
Although the electrical conductivity of aluminum is only about 60% that of copper per area of cross section, aluminum is used in electrical transmission lines because of its light weight.
The alloys of aluminum are used in the construction of aircraft and rockets.
The corrosion resistance of aluminum is excellent due to a thin surface layer of aluminium oxide that forms when the metal is exposed to air, effectively preventing further oxidation.
Aluminium is one of the few metals which retain full silvery reflectance in finely powdered form, making it an important geponent of silver paints.
Source: wikipedia.org, et al.
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