Question

Why is aluminum used for making airplanes?

Answer 1

Aluminum is one of the major materials used for making an aircraft. Firstly the airlines were made of wood because of the light weight of wood. But later on, metals replace the wood industry. Aluminum is the best metal to replace wood in the airline manufacturing unit.

Complete answer:
Aluminum is the best metal to replace the wood material of the airline industry. Aluminum has unique properties due to which it is useful in making airplanes. Some of these properties of aluminum which suited it the airplane material are listed below:
$1.$ Aluminium is strong enough to bear the pressure of the winds while flying high in the sky. It is strong enough to bear the forces which it experienced while landing and take -off.
$2.$ Aluminium is light in weight so that it can maintain the up-thrust of the airplane. It is light weighted material so that its excess use doesn’t make the airplane heavy.
$3.$ Aluminium is predictable and inexpensive too as compared to other metals. The cost of the airplane is maintained by using inexpensive material.
$4.$ Aluminium doesn’t have high tensile strength while other metals have. This is why aluminium is the best material to be used in the airline industry. Having high tensile strength is not good for airplanes because it can be dangerous for them.

Note:
Aluminium is not the only material which is used in making airplanes. Also the alloy of aluminium is used. Purely aluminium is not used here. Indeed there are other metals which have higher strength than aluminium but in cost comparison it is the best material to use.