Aluminium is a chemical element with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic and ductile metal in the boron group. Aluminium is the most abundant metal element in the earth's crust.

It is so chemically reactive that native specimens are rare and limited to extreme reducing environments. Instead, it is found combined in over 270 different minerals.

About 41 million tons are smelted each year and employed in a wide arrange of applications. From auto bodies to beer cans, and from electrical cables to aircraft skins, aluminium is a very big part of our everyday lives.

A major breakthrough in aluminium production came in 1886 when Charles Martin Hall discovered that aluminium could be produced using electrolytic reduction. Until that time, aluminium had been rarer and more expensive than gold. However, within two years of Hall's discovery, aluminium companies were being established in Europe and America.

About 20% of all aluminium produced is used in packaging materials. Aluminium foil is a suitable packaging material for food because of it is non-toxic, whereas it is also a suitable sealant for chemical products because of its low reactivity and is impermeable to light, water, and oxygen. In the US alone, about 100 billion aluminium cans are shipped every year. Over half of these are eventually recycled.

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