Abstract
NIMS have been publishing Fatigue data sheets of 104 for 30 years. The Fatigue data sheets were classified low-cycle fatigue, high-cycle fatigue, and fatigue crack propagation. In addition, materials are carbon steels, low alloy steels, aluminum alloys, and titanium alloys. In this paper, fatigue characteristics of titanium alloys were examined. As the results, an indexes of the fatigue characteristics were found to be σ_B and σ_<yc>. The σ_B and σ_<yc> normalized the fatigue strength of the titanium alloys.
