This book provides the readers with all the major aspects of powder metallurgy in single binding compilation. From economic, environmental and performance based viewpoints, powder metallurgy process indicates significant advantages in production of components and parts because of their special compositions through elemental mixing and 3-D near net shape forming techniques. This method is applicable to not only metal products but also organic materials and ceramics, which are employed as electrical products as well as structural products. The authors have contributed extremely important and valuable research information in this book elucidating several properties and performance of Powder Metallurgy materials for their applications as actual components. Specifically, the life estimation of Powder Metallurgy ferrous materials by tribological performance assessment and sliding contact fatigue test of Powder Metallurgy semi-metallic materials have been focused and presented in this book.