This study intended to develop the casting method for the production of the bimetal hammer which consists of Cr-Ni steel shank and high Cr cast iron head. In addition, the optimal heat treatment conditions to achieve the desired microstructures, hardness and wear resistant property will be established in this work. The objective of this study is to attain a bimetal hammer which has a tough alloyed steel shank and a high wear resistant head, which can replace the traditional single alloy (high Mn steel) hammer with substantially increased service life.