White Fused Alumina /White Oxide Aluminium Powder

The hardness rate of white corundum is higher than that of brown corundum, with slightly lower toughness, high purity, good self-sharpening, strong cutting ability, low calorific value, high efficiency, acid and alkali corrosion resistance, high temperature resistance and good thermal stability
Chemical specification of white fused alumina UsageProduct specificationMain chemical composition % Al2O3Na2OmagneticSiO2abrasiveF12#-80#≥99.2≤0.4-≤0.0390#-150#≥99.0≤0.4≤0.03≤0.05180#-240#≥98.5≤0.4-≤0.031#-63#≥99.3≤0.4≤0.03≤0.05refractory180#-0
200#-0
320#-0≥99.3≤0.4≤0.06≤0.05Fine powder0-1mm
1-3mm
3-5mm
5-8mm
8-12mm≥99≤0.4≤0.1≤0.02
Physical characteristics of white fused aluminaCrystal systemhexagonaldensity3.90 g/cm3Bulk density1.75~1.95g/cm3hardnessmicro2000 - 2200 Kg/mm2mohs9.0colorwhiteDark blue after calciningMelt point2250 CMaximum service temperature1900 CSpecific heat (Cal/g. C)0.26 (20 - 90 C)Thermal conductivitynormal 900 C(Cal/cm3. sec. C)Refractive indexe=1.760 w=1.768(Na line)The resistivity30 C 300 C 900 C 1600 C(cm)10,16,10,13,10,5,10,4Linear expansion coefficient(7 - 9)*10^-6/K (0 - 1600 C)properties1.
2.Reaction with acid slightly corroded in aqua regia and hydrofluoric acidreacts only slightly with a strong alkaline solutionREDOX effectNO