Aluminium alloy based metal matrix composites (AMMC) are widely used in automobiles, aerospace, shipbuilding industries and biomedical application because of their high strength to weight ratio. MMC are fabricated using various methods like liquid state fabrication, solid-state fabrication methods, etc. It was found that stir casting is an economical method to fabricate MMC. The aim of this work is to develop the particulate reinforced metal matrix composite materials by using Aluminium 7075 and reinforcing Boron Carbide particle size of 40 microns. The B4C particles varying from 2.5 wt. %, 5wt%, 7.5wt% and 10wt% the samples are prepared and tested to find the various mechanical properties like tensile, compression, and hardness and the test reports were compared with the al Al 7075as cast and heat treatment samples. The internal structure of the composite is observed using Scanning Electron Microscope (SEM) systems. It was used for the characterization of composites Microstructural characterization studies performed on the different compositions of composite prepared shows a uniform distribution of B4C particles at the microscopic scale with less porosity.