International Science and Technology Journal

The objective of this research is to study the addition of graphite to the natural sand and its effect on one of the most important mechanical properties, namely, the hardness of aluminum casting. As known that sand casting is the most industrially applied in the world, where achieve the principles of efficiency and cost in industrial production. Sand of casting is one of the most important pillars of sand casting, it has a central role in the production process. In this study, devices were used with standard specifications to determine sand properties such as granular size, permeability, shear resistance, compression and tensile strength, as well as using the hardness device according to the Vickers scale to measure the hardness of cast, the results obtained show the high in cast hardness with increased graphite ratio in the user sand casting