Aluminium is a light and resistant metal of grey-silver colour due to a thin oxidation layer that forms when the metal is exposed to air and prevents corrosion.
Its specific weight is three times smaller than that of steel. This metal has a good workability and excellent corrosion resistance properties. It is not magnetic, and does not spark.

Aluminium is used primarily for: the transport sector, packaging material (tins, aluminium foil, etc.), construction (windows, doors, façade structures), consumer goods, such as household appliances and cooking utensils, power lines, machinery, etc.

Usually, aluminium is commercialised as an alloy. Its alloys are:
1000 pure aluminium (99%)
2000 Al – copper: the aerospace industry
3000 Al – manganese: cooking utensils, pressure vessels and pipes, insulated panels
4000 Al – silicon: forged pistons production
5000 Al – magnesium: these alloys have good corrosion resistance properties and are used, for example, for fuel tanks, mechanical parts and moulds for plastic material
6000 Al – silicon and magnesium: these alloys have high workability and are used in the naval and railway industries, as well as for aluminium fixtures
7000 Al – zinc and magnesium
8000 mixed alloys
9000 experimental series

Aluminium is commercialised in the form of: plates, strips, bars, pipes, different profiles and blocks.

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