White Fused Alumina


White Fused Alumina is made from industrial alundum, melting in an electric arc furnace and cooling. It has a higher hardness and lower crisp than brown fused alumina. The grains are white and the white color strengthened as the grains being attenuated.


  • White fused alumina is usually used for high grade refractory material, and also for ceramic, resin bonded abrasive grinding, sandblasting and precision casting.
  • White fused alumina is used for lapping, polishing, non-skid tile, and pressure blasting when a high purity and highly friable abrasive is needed.

Physical Index of White Fused Alumina:

Color White
Basic Mineral α-AI2O3
True density 3.96g/cm3
Bulk density 1.75-1.95g/cm3
Micro hardness HV2200-2300
Mosh hardness 9.0
Melting Point 2250℃

Chemical Composition of White Fused Alumina:

Typical Value:

AI2O3 99.65%
Na2O 0.25%
Fe2O3 0.04%
SiO2 0.03%

Abrasive Grade:

Grit Size AI2O3 Na2O
F12-F220 >99.5% >0.35%
F230-F400 >99.2% >0.4%
F500-F1200 >99.0% >0.5%

Refractory Grade:

Grit Size AI2O3 Na2O
0-1mm >99.2% >0.4%
1-3mm >99.2% >0.4%
3-5mm >99.0% >0.4%
200mesh >99.0% >0.5%
325mesh >99.0% >0.5%