Abstract: An exact definition of the usability of aircraft materials is discussed in this paper. The usability of an aircraft material means its necessary properties which qualify it for a specified aircraft structure part both in manufacturing and service.Optimal measures and approaches for improving the usability of conventional aircraft materials（aluminum and titanium alloys）, materials with low density （Al-Li alloys, TisAl and TiAl alloys and composites）and su-peralloys both metallurgically and technologically are put forward.