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Aluminium

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Aluminium is a chemical element with atomic number 13.  Its symbol is Al and it is identified by the number  CAS 7429-90-5

It is a silver color, ductile metal.  Aluminium is mainly extracted from bauxite and its resistance to oxidation, its softness and lightness are remarkable.  Raw aluminium is worked through  different industrial production processes, such as fusion, forging and pressing.


Aluminium is used in many industries for the production of millions of varied products and it plays a very important role in the world’s economy.
Structural components made of aluminium are vital for the aerospace industry and very important in the fields of transport and construction, where its lightness, durability and resistance are necessary.

Aluminium is a light but resistant metal, its color is silver gray due to a light layer of oxidation that forms quickly once it comes in contact with air and which prevents corrosion since it is not soluble.  Aluminium has a specific weight of about a third of steel, or that of copper; it is malleable, ductile and can be easily worked; it has an excellent resistance to corrosion and durability.  Moreover, it is not magnetic, does not produce sparks, and it is the second metal in terms of malleability and sixth for ductility.  Aluminium  is one of the most common elements on Earth (8.3% in weight), second only to oxygen (45.5%) and silicon (25.7%) it is comparable to iron (6.2%) and to calcium (4.6%).  In nature it is always found combined with other elements;  it is present in numerous minerals.  From an industrial point of view, this light metal (its density is of 2.71 g/  cm³)  is produced from bauxite, a brown reddish or yellow rock, widely found in the United States, Russia, Guyana, Hungary, and in the territories of the ex-Yugoslavia.  
The main properties of Aluminium are:


  • low specific weight, equal to or about a third of that of steel and other copper alloys

  • high thermal and electric conductivity

  • high plasticity

  • excellent ductility and malleability

  • low radiant power


Some of the many fields in which Aluminium is used are:


  • Transportation (in almost every type of transportation vehicle)

  • Packaging (cans, alluminum foil, etc.)

  • In construction (windows, doors, for continuous facade structures, metal coatings, for boxed metal sheets pressplating, etc.)

  • Durable consumer goods (appliances, cooking utensils, etc.)

  • Electrical lines

  • Machinery

  • Optics, such as telescopes and portable binoculars.

  • Weapons and their components

  • Shells and bullets for ammunitions.

 
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