... ) size:0.5-5um, 325-800mesh purity:99% mi Calcined Alumina,(ceramics grade)PropertiesBrandsChemicalAnalysis(%)TrueDensity(g/cm3)minAlpha-Al2O3(%)minAverage particaleD50 ... ,3,4um,325mesh,0.4,0.6,0.8,1umCeramics Alumina calcined alumina(ceramics grade)