White Fused Aluminum Oxide Refractory

wfa2REFRACTORY WHITE ALUMINUM OXIDE is fused in an electric furnace using high-grade bayer-processed alumina as raw material. It has higher hardness and slightly lower toughness compared with brown fused alumina. Among its properties as a high-grade refractory are high purity, acid and alkali resistance, good thermal stability.

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

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%


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%

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.