The injection molded Fe sintered bodies were fabricated using two kinds of nano Fe powders, Fe-5%vol.ZrO2 and Fe-10vol.%ZrO2 powders. The relationship between microstructure and mechanical properties depending on the ZrO2 contents and sintering temperature were characterized by SEM and TEM techniques. In the wear test, the Fe-0vol%ZrO2 sintered bodies showed mainly adhesive wear, but in the Fe-5%vol. ZrO2 and Fe-10vol. % ZrO2 composites the main wear behavior showed abrasive wear mode.