The more industrialized society is, the more cast iron chips - by products of industry - are produced. Many investigations and development activites on recycling the cast iron chips by powder metallurgy process were made. In this paper, the effects of alloyed powder such as PASC 45, SUS 410L, Fe-Mo, and Fe-Ni powder on the cast iron powders which were made from the cast iron chips of the cylinder block, were studied. The PASC 45, Fe-Mo, and Fe-Ni powder increased the mechanical properties, but the SUS 410L powder deteriorated the mechanical properties.
The sintered materials made from the cast iron powders with these alloyed podwers showed higher wear quality as materials of engine valve guide and tappet than the conventional materials.