Alumina Fine Powder Introduction: Alumina fine powder is made from low sodium calcined alumina powder through grinding and deep processing. Application: Widely used in such industries as architectural ceramics,electronic equipment,structural ceramics,refractory materials,wear-resistant materials,polishing materials and so on. Properties: Higher melting points,excellent mechanical strength and hardness.High resistivity and Thermal conductivity. Product Details: Brand Chemical Composition(%) α-Al2O3 （%） Density (g/cm³） Particle Size Al2O3 SiO2 Na2O Fe2O3 LOL D50 325Mesh AK-1 ≥99.3 ≤0.02 ≤0.40 ≤0.02 ≤0.1 ≥93 ≥3.90 4-5 ≤1% AK-2 ≥99.6 ≤0.01 ≤0.15 ≤0.02 ≤0.1 ≥94 ≥3.94 4-5 ≤1% Particle size can be prepared according to request.   Packing: 50Kgs/bag 1T/Jumbo bag(BB) Or as customer’s request.