White Corundum is made from high quality alumina by melting above 2000°C in the electric arc furnace and then cooling. It is with high purity, great self-sharpening, acid and alkali resistance, high temperature and stable thermal performance. Its hardness is a little higher than brown fused alumina. It is with low toughness, great grinding ability, small heat and high efficiency. It can be made to the abrasives (eg: grinding tools), suitable for sandblasting and grinding high carbon steel and staining steel and other fine-grained abrasive; also be used for precision casting and high-refractory materials.
Physical and chemical analysis
Chemical compositions
Value of specifications (%)
Al2O3≥99.27
Na2O≤0.30
SiO2≤0.14
Physical properties
Hexagonal
Main crystal body: Al2O3
Color: white
Grain density≥3.9 g/cm3
Bulk density:1.75-1.95 g/cm3
Morse hardness ≥9
Linear expansion coefficient (1/°C) 8.
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Trade Leads Directory -> All Trade Leads -> Industrial Supplies -> Abrasives -> White corundum powder
