This coating gives to the blade on high surface hardness and it is particularly suitable for cutting medium/ low alloy steel and in conditions of cutting involving hard wearing both adhesive and abrasive type. Thanks to this kind of coating is possible to obtain various advantages and improvements in processing , such as a reduction of the effect of cutting and deformation strengths, reduction of roughness on machined parts, a better sliding of material being processed and not least an increased yield of the tool though increased feeds and greater life of the bladed which may be higher 50% compared to the conventional blades.