Investigation of tensile-compressive poof strength of representative PM steels for automotive applications

A sintered part for automobile has been growing so far. Also, demands for higher strength of the materials are increasing. The compressive strength becomes more important in their requirement. However there are few detailed studies on compressive properties of sintering materials. Generally, it is thought that it was considered compression and tensile proof stress equal in strength of materials. It is important that compressive properties are measured precisely from the situation of the design. This study investigated the compression properties and simulated it about the stress behavior of sintering materials. In this examination, all sintered test pieces showed higher compressive proof strength than tensile proof strength. And the simulation, in elastic level, supported these results.