What are plane materials?
The main structural materials used in airplanes are aluminum, titanium, and steel — each chosen for very specific engineering reasons, not cost or convenience. Aluminum alloys make up a large portion of the airframe because they offer an excellent balance of low weight, strength, and corrosion resistance. Aircraft engines are primarily made with aluminum. During the creation of the first planes, the Wright Brothers initially attempted to use steel for their engines, but steel proved to be too heavy, so they opted for aluminum. The furniture inside the plane is also primarily aluminum.