The properties of metal matrix composite can be influenced by the reinforcement particles at different weight fractions of the composite. In this work, the hybrid composite, which consists of Al.6061 as matrix and fly ash&SiCP as the reinforcements, was processed by stir casting technique to studythe mechanical characterization and the effect of reinforcements (fly ash, SiCP)on the prepared composite. In addition, the study on the effect of input process parameters namely Wt.% of SiC, Stirring time and Stirring speed on the tensile and compressive strength is achieved by Taguchi method for predicting the better parameters that gives the highest tensile and compressive strength to the casting.The contribution ratio is obtained using analysis of variance.