refractory white corundum 1.Experienced factory 2.ISO9001,2000 3.high purity Al2O3,more than 99.4%
refractory 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.
Applications:
It can be made to the abrasives, 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.
Chemical compositions | Physical properties | |||
Items | Value of specification (%) | Items | Property | |
Al2O3 | 99.50min | Color | White | |
SiO2 | 0.02max | Bulk density | 1.75-1.95g/cm3 | |
Na2O | 0.35max | Grain density | 3.90g/cm3 min | |
Fe2O3 | 0.1 max |
hardness | Morse hardness | 9 |
Micro hardness | 21600-22600kg/mm3 |
refractory white corundum