Aluminium tungsten carbide (Al-WC) composites are extensively employed in defence and automotive industries, have been given an attempt to increase their interfacial strength. The improvement of interfacial strength is investigated by powder metallurgy process. It was calculated that the electroless cobalt coated WC reinforcement's ultimate breaking load had risen by 45% compared to uncoated reinforcement. The presence of cobalt in the aluminium matrix was confirmed by powder XRD and SEM examinations. Thus, the produced composites can be employed for heavy machinery as an alternative to monolithic alloys because of improved interfacial strength and micro hardness.