A comparative analysis was conducted by applying casting law of mixture on three distinct composites having same matrix metal, LM 25, but reinforced material is having three different ceramics in equal by volume fraction for mechanical properties of the composites. The different ceramics Boron Nitride (BN), Boron Carbide (B4C), and Silicon Nitride (Si3N4) at varying reinforcement levels of 3%, 6%, and 9%.