Representative material has high hardness tool steel, hardened steel and roll and so on, most of this material using conventional grinding method for finishing. Now, in order to reduce production costs and switch to machining.

To achieve high hardness materials machining, the tool must have the condition should be much higher than the hardness of the material hardness to be cut. In addition, due to the high hardness material machining, the tip temperature is very high, so it needs to have available in the following features:

Good resistance to plastic deformation properties, namely high-temperature hardness well.

Good chemical stability, that will not happen with the cut material, oxygen and cutting fluids and other chemical reactions, it does not appear the phenomenon of thermal decomposition.

Good thermal conductivity, ie high temperature heads will not produce defects due to thermal shock phenomenon.