Diamond wheels

They are particularly cost effective for grinding brittle and short-chip materials e.g. ceramic, glass, tungsten carbide, titanium, alloyed steel, graphite, magnetic sintered and composite materials. Diamond is the hardest grinding media known to-date (Knoops hardness 8,000) and like cubic boron nitride, is synthetically manufactured. Diamond can even be used for machining plastic and for some special applications e.g. honing of steel and grey cast iron.