... compared with Brown Aluminum Oxide. It is characterized by high purity, excellent self-sharpening, efficient grinding efficiency, and low ... high carbon steel, high-speed steel and chilled steel. It can also be used as lapping and polishing medium, precision founding sand, coating ... .5 max0.7 max0.8max0.8maxMagnetic Material Content (% by weight)GritMagnetic Material Content16#-24#<0.002330#-120#<0. ...