Carbide cutting tools and PCD tools (polycrystalline diamond) performance difference

polycrystalline diamond has a very high hardness, but its toughness as tungsten carbide, HSS bigger than big, so the main failure mode of PCD cutting tools is chipping.
PCD tool can effectively processing of non-ferrous metal materials and non-metallic materials. Such as copper, tungsten and other non-ferrous metals and alloys,

ceramics, carbide, various fibers and particulate reinforced composite materials, plastics, rubber, graphite, glass and wood, but not for the diamond cutting

Cut steel and other iron-group material.