As synthetic diamond powder is the most strong material which is consist of single element, carbon(C), it is possible to grind a huge volume within short time and not much change in specification.

Under these characteristic, there were a number of demand of diamond tools in market and so developed synthetic diamond powder. Diamond is returned to the element, Carbon (C) over 600℃ due to the oxidization. So it can't use grinding Fe Series; Alloy-steel, Bearing-steel, all kinds of tool steel, SUS, HSS and etc. But through the developing of New Material, CBN(Cubic Boron Nitride), We can do that.

So, CBN (Cubic Boron Nitride) which is not oxidized below 1200℃ use grinding above Fe series.