This work constitutes of the Tensile strength and compression strength of 2% ,4% and 6% of Aluminum oxide filler addition with 20%(constant) Chopped E-glass fiber(3mm in length) reinforcement epoxy composite materials .An attempt has been made to develop 2%,4% and 6% of Aluminum oxide filler addition with 20%(constant) Chopped E-glass fiber(3mm in length) reinforcement epoxy composite materials with low density and economical, according to ASTM D638 Type IV Standard and ASTM D - 1621. using resin -LY556 as a matrix material and hardener -HY 951 with 20% Chopped E-glass fibre(3mm in length) as...