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What are some properties and uses of aluminium?



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Join date : 2016-03-21

What are some properties and uses of aluminium?

Post by helen01 on Sat Jul 01, 2017 2:30 pm

My words:
Aluminium is a soft, lightweight metal with normally a dull silvery appearance caused by a thin layer of oxidation that forms quickly when the metal is exposed to air. Aluminium oxide has a higher melting point than pure aluminium. Aluminium is nontoxic (as the metal), nonmagnetic, and nonsparking. It has a tensile strength of about 49 megapascals (MPa) in a pure state and 400 MPa as an alloy. Aluminium is about one-third as dense as steel or copper; it is malleable, ductile, and easily machined and cast. It has excellent corrosion resistance and durability because of the protective oxide layer.

Aluminium is one of the few metals which retains full silvery reflectance, even in finely powdered form, which makes it a very important component of silver paints.

Some of the many uses for aluminium metal are in:

Transportation (automobiles, aircraft, trucks, railroad cars, marine vessels, bicycles etc.)
Packaging (cans, foil, etc.)
Water treatment
Treatment against fish parasites such as Gyrodactylus salaris.
Construction (windows, doors, siding, building wire, etc.)
Cooking utensils
Electrical transmission lines
MKM steel and Alnico magnets
Super purity aluminium (SPA, 99.980% to 99.999% Al), used in electronics and CDs.
Heat sinks for electronic appliances such as transistors and CPUs.
Powdered aluminium is used in paint, and in pyrotechnics such as solid rocket fuels and thermite.
In the blades of prop swords and knives used in stage combat


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