... Coated Abrasives 3) Overseas for 6 years 4) Professional Factory Brown Aluminum Oxide 1. Description: 1. Optimum hardness2. Tough and sharp3 ... vestigial amounts of TiO2, SiO2, Fe2O3, CaO and MgO.6. Brown Fused Alumina Oxide is characterized by good toughness, high mechanical ... and coated abrasive tools, and lapping and polishing processes.9. Brown Fused Alumina is used as a raw material in the ...