How to judge the quality of white corundum?

according to color

By observing the transparency of white corundum under light, if the color is relatively bright, this type of white corundum often has higher hardness and better wear resistance, as it contains more active ingredients, resulting in better quality.

according to impurities

During the production of white alumina, impurities are inevitably mixed in. On the one hand, the purity of the raw materials is not high, and on the other hand, the processing is not mature. Therefore, white alumina with low impurity content often has higher quality and uniform particle size, making its use very extensive.

according to hardness

White corundum is a material with very high hardness, and its hardness is required in many fields. Therefore, hardness testing has become a standard for judging its quality.