What is the hardness of white corundum?
White corundum is made of alumina through high temperature smelting, so the hardness of white corundum is very high
White corundum customers generally pay attention to the two hardnesses of white corundum, one is Mohs hardness, and the other is microhardness.
Mohs hardness of white corundum: 9
Microhardness of white corundum: 2200-2400kg/mm2
It is precisely because of the high hardness of white corundum that white corundum is widely used in sandblasting, grinding, etc.