This is why conventional coating alone can not solve all the problems generated by the processing of high-strength steel. Characteristics of the substrate is of decisive significance. So as to make the whole tool to achieve high ductility and compressive strength. Next is the tool wear, abrasion has very important implications for mass production. As such. On the tool material standpoint we currently find two solutions. If only the material ductility related problems, then uddeholm companies use "high-voltage process furnace slag" (desu) produced called "caldie" is preferred to solve these problems. Ductility of this metal than the low alloy steel powder metallurgy degrees higher. Manufacturers may improve the steel chemically combined procedure to achieve high ductility. From a metallurgical point of view, uddeholm company caldie material is a combination of tool steel. This material certainly have a high abrasion resistance. At this point, the two programs have been prepared, the existing "vanadis 4" steel continues to develop as a code for "vanadis 4 extre" steel. This material has the combination of properties suitable for molding of high-strength steel. The tool steel has a high ductility, good compressive strength and slight wear; not only has a high strength, and in many ways a combination of features have the advantage.
     Two kinds of steel coating process can be carried out, so that you can meet different specific technical requirements. In consideration of such material may have a high fatigue strength, and therefore the coating process still have a high overall economics.