White Fused Alumina



White fused alumina, with Industrial alumina as main raw material, is electrically fused in high temperature. It has a higher hardness compared with brown fused alumina, while a lower toughness. Abrasive tools that made from white fused alumina are suitable for the grinding of high carbon steel, high speed steel and chilled steel. It can also be used as polishing media and precision founding sand, spraying and coating materials, catalyst carrier, special ceramics and high grade refractory materials.

Physical Index:
Color White
Basic Mineral α-Al2O3
True Density 3.96g/cm3
Bulk Density 1.75-1.95g/cm3
Microhardness HV2200-2300
Mohs Hardness 9.0
Melting Point 2250℃

Chemical Composition
Typical Value:
Al2O3 99.65%
Na2O 0.25%
Fe2O3 0.04%
SiO2 0.03%

Abrasives Grade:
Grit Size Al2O3 Na2O
F12-220 >99.5% <0.35% F230-400 >99.2% <0.4% F500-1200 >99.0% <0.5%

Size Available:
Abrasives F16-F220, F230-F1200, JIS240-JIS3000
Refractory 0-1mm,1-3mm,3-5mm,200mesh,325mesh
Other special specifications could be supplied as required.

 Grinding, lapping and polishing media
 Ceramic grinding wheels
 Sandblasting

25kg/bag, 1000kg/bag