Powder metallurgy material refers to the powder metallurgy process of porous, semi-dense or fully dense materials (including products). The powder metallurgy material has the unique chemical composition, physical and mechanical properties which can not be obtained by the traditional casting process. For example, the porosity of the material is controllable, the material is homogeneous and there is no macroscopic segregation (the alloy is not solidified, Flow caused by the chemical composition of non-uniform phenomenon), can be a molding and so on.