Brown fused alumina hardness

Brown Fused Alumina Hardness

Brown Fused Alumina is made from Calcined Bauxite. It is a hard and tough material, used in grinding wheels manufacturing (both vitrified and resin bonded) and coated products. These grains are also used for shot blasting and as polishing media.

High hardness is one main property of brown fused alumina.Brown fused alumina is used in many fields because of his high hardness,then how much is its hardness exactly?