Abstract: The aluminium is a matrix material and the reinforcements are E-glass fiber and fly ash with various weight fraction the E-glass fiber is constant and the fly ash is varied 0,3,6,9 wt. % fabricate by using stir casting method. After the composite sample are subjected to examine the mechanical properties such as tensile, compressive, yield, % of elongation, hardness and toughness strength. From the test result the tensile strength of the four different wt.% composite sample is increased gradually adding with increasing the fly ash wt.% gradually (0,3,6,9 wt.%), the 9 wt.% fly ash sample is get higher tensile strength 199.698 N/mm2 compared with other samples. The yield strength of the four composite sample was analyzed during the tensile strength test the yield end point of the specimen is called yield strength it was increased adding with increasing the fly ash wt.% gradually, the 9 wt.% of fly ash sample is get higher yield strength 182.55 N/mm2 compared with other samples. The compressive strength of the four composite sample are increased gradually adding with increasing of fly ash wt.%, the 9 wt.% fly ash sample was get higher compressive strength 432.678 N/mm2 compared with other samples.