Cutting ToolsCutting tools must be made of a material harder than the material which is to be cut, and the tool must be able to withstand the heat generated in the metal-cutting process. Also, the tool must have a specific geometry, with clearance angles designed so that the cutting edge can contact the workpiece without the rest of the tool dragging on the workpiece surface.
To produce quality parts, a cutting tool must have three characteristics:
Hardness — hardness and strength at high temperatures.
Toughness — toughness, so that tools don’t chip or fracture.
Wear resistance — having acceptable tool life before needing to be replaced.