All kinds of metal aluminum, titanium, steel, copper and silver, etc., non-metallic rubber (mainly used for seals, aircraft tires), alloys. Metals such as: various types of stainless steel, two-way steel, aluminum, titanium and other alloying elements are the main metal materials of the aircraft, titanium's mechanical properties are quite good, the weight is also light, but the price is high, aluminum's mechanical properties of the ordinary, light weight.