SG abrasive ni polycrystalline alumina abrasive hamwe na subicron kristalline.Itanga gusya cyane kurenza ibisanzwe bya alumina byavanze, kubera ko impande zayo zacitse zavunitse microscopique kandi ubushobozi bwo gukata bugumaho hejuru no gusya silindrike.Gusya uruziga rukozwe muri ceramic abrasive hamwe nigihe kirekire kandi kiramba, kikaba cyikubye inshuro 5-10 kurenza uruziga rwo gusya rwakozwe na corundum isanzwe. kuruta ibiziga bisanzwe bya aluminium oxyde, hamwe no kwikarishye kwangiza cyane bigabanya impande zikarishye kubikoresho hanyuma bigapfa.