2015 New Batch of White Fused Alumina, White Corundum Made In China
White Corundum (White fused aluminum oxide)electrically fused in arc furnace with high grade processed alumina as raw material. It has higher
hardness and slight lower toughness comparing with brown fused alumina. It is also characterized by
its high purity, ability of self-sharpening, better cutting, less heat emit, higher efficiency, acid and alkali resistance, good thermal
stability. As the abrasive materials, it is suitable for grinding highspeed, high carbon steel, as loose
grains, it widely used for bonded and coated abrasives , polishing, precision casting and so on.
Chemical compositions | Physical properties | |||
Items | Value of specification(%) | Items | property | |
Al2O3 | 99.6min | Color | White | |
SiO2 | 0.04max | Bulk density | 1.93g/cm3 | |
NaO2 | 0.22max | True density | 3.93g/cm3 | |
Fe2O3 | 0.04max | Hardness | Morse hardness | 9 |
Micro hardness | 21600-22600kg/mm3 | |||
Usage | to make emerypaper | Content of magnetic substance | 0.0023%max |