LI5: Corundum stone. Ideal for sharpening with high material removal. Specially designed for double blade shears or branch cutters.
Properties of Corundum
Corundum is an exceptionally hard and tough material. It is the third hardest mineral, after diamond and moissanite. It serves as the index mineral for a hardness of nine on the Mohs Hardness Scale.
Natural and synthetic corundum is used in a wide variety of industrial applications because of its toughness, hardness, and chemical stability.
The extreme hardness makes corundum an excellent abrasive.