PCD Diamond Tools PCD Diamond Tools can be easily used to machine non-ferrous & non-metallic components. Diamond, in its purest form, is essentially carbon. Carbon is known to have an affinity towards iron at higher temperatures. These temperatures are quickly reached while machining at certain speeds. For this reason, diamond cannot be conveniently used for ferrous applications. PCD Tools are most frequently applied in the automobile Industry – comprising both heavy and light motor vehicles. Some of the materials that have been cost effectively machined with PCD Tools include: hypo and hypereutectic aluminum alloys, copper, bronze, babbit and abrasive plastic composites.