... Brown fused alumina1 DescriptionBrown Aluminium Oxide is fused in an electrical arc furnace at high temperature (approximately 2000 degrees ... precision casting3 Grit Size Available (F series for bonded abrasive and sandblasting, P series for coated abrasive)F series: F4, F8, F10, F12, F14 ... F320, F360, F400, F500, F600, F800, F1000, F1200,F1500,F2000P series: P8, P10, P12, P16, P24, P30, P36, P40, P50 ...