The main aim of this project is to create corrosion free light weight pump impeller with composite materials. Due to light weight and corrosion-free qualities, aluminium composites were widely used in the automotive industry. When TiB2 is being reinforcement with aluminium alloy it increases mechanical characteristics of the material. So here in our project we are going to use aluminium 7075 as a base material and reinforcing it with titanium di boride to increase its strength and also adding niobium which forms oxide layer which restricts the occurrence of corrosion. The stir casting method is being used to create three composites made of different materials. After manufacturing three different samples of composites, we are going to make three different tests like tensile test to check the ultimate tensile strength of the material and impact test to check the toughness behavior of the material and microhardness test to check the hardness of the material. The test findings demonstrate the different composite samples and their overall mechanical characteristics. Finally, by comparing three different test results we are going to choose the material composition which possess higher mechanical properties.