microcrystalline fused alumina obtains from varying the cooling rate of brown fused alumina. microcrystalline fused alumina¡¯s crystal size is very small and the abrasive grain is composed of fine crystalline blocks .microcrystalline fused alumina has the characteristics of extra toughness and self-sharpening. our products include brown fused alumina95%, brown fused alumina98%,white fused alumina, black fused alumina, compact fused alumina, semi-friable fused alumina, micro crystalline fused alumina, calcium aluminate etc. microcrystalline fused alumina: f4#-f240: al2o3: 94.0 - 96.5% tio2: 2.0 - 4.5% p8-p220# al2o3: 94.0 - 96.5% tio2: 2.0 - 4.5% we have strict control about company & quality;our service is full-around and first-class. so we¡¯re you wise choice.don¡¯t hesitate to contact us . contact person: ms. liang xiaofei(sales manager) helen(at)rs-abrasive.com tel:+86 379 65285888-0 13015581246 fax:+86 379 66285889