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Largely because of their high tensile strength compared to other materials.

There are many other reasons why various specificmetals are used due to unique requirements of a given application: aluminum is used in airplanes because they require lightweight materials, but steel is used in bridges because weight is not critical here and steel is stronger than aluminum, when high electrical conductivity is needed copper is usually used, etc.

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10y ago
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14y ago

Airplanes have to be lighter for obvious reasons. Strong but light metals are not cheap.

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13y ago

Metals are durable, require little maintenance, strong for their weight and production methods are relatively inexpensive.

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9y ago

Because they are hard and strong

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Q: Why are metals used in making bridges airplanes and satellites?
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