Properties of new cold die steel attaining both easy die fabrication and die life

Recently, high-tensile strength steels have been widely applied in automobile industry. The high-tensile steel is hard to form, therefore die needs high performance and wear resistance is also important for die steel. In addition, good machinability is also important for die fabrication because of lower cost needs. In general, it is difficult to raise both wear resistance and machinability. New cold die steel has been developed by profitable alloy design and control of microstructure. This material has good machinability keeping superior wear resistance. In this paper, we introduce these properties, machinability, wear resistance and applications of this new steel.