aluminium alloy
Aluminium is used in the manufacturing of aircraft bodies. It has a low density so the aircraft is lighter and is able to fly easily up in the air.
Alloy aluminum is lighter in weight.
Almost always it is aluminum.
Mostly aluminium alloys, but some aircraft have used steel, titanium and more recently, composite materials.
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Steel is used to make aircraft springs.
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Men tried all kinds of materials, but the first aircraft that flew were all built of light, strong wood covered with very light fabric, (usually muslin).
Dental materials are examples of materials that are used to make impressions.
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Modern aircraft have many plastics, ceramics and composite materials in them.