Titanium alloy is mainly used in aircraft structure for skeleton, skin, fuselage frame, landing gear, fire wall, wing, tail, longitudinal beam, hatch, multiplier, keel, quick-acting brake, stop device, Fasteners, front wheels, arches, flaps, doubles, road signs and signal boards.
The use of titanium rods and titanium alloys in various advanced fighters and bombers designed in Europe and the United States has been concealed at more than 20%. The fourth-generation US fighter F-22 uses 36 tons of titanium, accounting for 41% of the structural quality. The F-22 fighter uses 6 titanium alloy materials, of which Ti-6A1-4V alloy accounts for about 36%.
The titanium structural parts used in civil passenger aircraft Boeing 777 weighs 5896.7kg, accounting for 11% of the structural quality. In addition to Ti-6A1-4V titanium alloy, Ti-1023, β-21S titanium alloy is also used, and Ti- is considered. 62222S and Ti-4Al-4Mo-2Sn-0.5Si titanium alloy.
Among the titanium alloys commonly used in aircraft structures in the world, there are about 15 kinds of preferred ones.
