SG abrasive ndi polycrystalline alumina abrasive yokhala ndi submicron crystalline structure.Amapereka magwiridwe antchito apamwamba kuposa ma abrasives ophatikizika a aluminiyamu, chifukwa m'mphepete mwake amasweka pang'onopang'ono ndipo luso lapamwamba lodulira limasungidwa pamwamba ndi cylindrical akupera.Gudumu lopukutira lopangidwa ndi ceramic abrasive lili ndi kulimba kwambiri komanso moyo wautali, womwe ndi nthawi 5-10 kuposa gudumu lopera lopangidwa ndi corundum wamba. kuposa mawilo wamba a aluminiyamu okusayidi, ndipo abrasive ake kudziletsa kumakulitsa m'mphepete lakuthwa pa zida ndi kufa.