... of high alumina refractory.2 Applicationa. Bonded abrasive products. b coated abrasive products such as sand paper, sand cloth, ... 20AAF-20A is a kind of regular Brown Aluminum Oxide abrasive grains, the shape of the grain is angular and ... get a complete range of grit sizes.As an abrasive, AF-20A is mainly used in making organic ... to ISO, ANSI, FEPA and JIS. brown aluminum oxide for abrasive tools