Statistical fatigue properties of SCM435 steel in ultra-long-life regime based on JSMS database on fatigue strength of metallic materials

In reliability assessment of mechanical structures in the long period, it is important to clarify the fatigue characteristics in such a long sequence of cyclic loading. Thus, ultra-long life fatigue properties of SCM435 steel were experimentally examined in rotating bending. In addition, high cycle fatigue data of the same kind of steels were extracted from the database on fatigue strength of metallic materials published by JSMS (The Society of Materials Science, Japan). These results and original data obtained by the authors were put together, and the statistical fatigue properties of these kinds of steels were analyzed as duplex P–S–N characteristics.