Aluminum oxide is the second-hardest mineral after diamond . It is also referred to as Brown Bauxite, Brown Fused Alumina and Brown Corundum. Blastline stocks brown aluminum oxide produced by fusing bauxite and anthracite in an electric arc furnace at high temperature. The resulting oxide is over 95% Al203. Its high density and angular sharpness make it one of the fastest, most versatile and economical cutting abrasives available Applications: Usable in both dry and wet blasting applications from cleaning and deburring to etching and finishing Used where a fast cutting action is required, also for compatibility with the substrate to be cleaned should grit entrapment occur Used in hand blast cabinets and specialized wet blasting applications.