What is the significance of the toughness of brown corundum for abrasives?

If brown corundum has a certain toughness, it will ensure its own service life, but at the same time, toughness for brown corundum since the sharpness also has a great impact, the stronger the toughness, brown corundum is less likely to break, but easy to blunt, grinding power decline, the two functions are mutually exclusive.

Of course, the toughness of brown corundum is also a measure, not infinite extension, because the contradictory properties of brown corundum toughness and self-sharpening, so it is necessary for customers to determine the balance of toughness and self-sharpening according to their own needs.