Aluminum is an element with an atomic number of 13. On the periodic table of elements its symbol is Al. It belongs to a group of metals including lead and tin. Aluminum has been used for a long time. During Ancient Egypt, aluminum oxides were used in their glazes and pottery. The Romans also used this metallic element.
Aluminium is used in a huge variety of products including cans, foils, kitchen utensils, window frames, beer kegs and aeroplane parts. This is because of its particular properties. It has low density, is non-toxic, has a high thermal conductivity, has excellent corrosion resistance and can be easily cast, machined and formed.
Aluminium hydroxide is used as an antacid, and mordant; it is used also in water purification, the manufacture of glass and ceramics, and in the waterproofing fabrics.   Lithium aluminium hydride is a powerful reducing agent used in organic chemistry .
Aluminum is used in health and hygiene products, as well as a food additive and in the manufacture of electrical items like light bulbs and phone lines. Aluminum is the second most commonly used metal in industry; it is an important component in automobiles, building items and packaging materials.
Today, aluminum is regularly used in the construction of high-rise buildings and bridges. The lighter weight of aluminum makes it easier, faster and more convenient to work with. It also helps reduce other costs.
Aluminum really comes into its own when you combine it with other metals to make aluminum alloys (an alloy is a metal mixed together with other elements to make a new material with improved properties—it might be stronger or it might melt at a higher temperature).
Unfortunately, aluminum remained too expensive to be widely used. Two important developments in the 1880s greatly increased the availability of aluminum. The first was the invention of a new process for obtaining aluminum from aluminum oxide.
The most common elements used in aluminium alloys are magnesium, silicon, manganese, zinc and copper. Alloy development is the basis for further metal processing, giving the metal the specifications required by the market.
Aluminum (Al), also spelled aluminium, chemical element, a lightweight, silvery-white metal of main Group 13 (IIIa, or boron group) of the periodic table. Aluminum is the most abundant metallic element in Earth’s crust and the most widely used nonferrous metal.
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