DC53 is Daido Steel SKD11 make improvements to a new cold die steel, its technical specifications set out in the Japanese Industrial Standards (JIS) G4404. It overcomes the SKD11 tempering hardness and lack of toughness weakness, it will replace the high strength and toughness SKD11 common cold die steel in the field of general and precision molds. In the heat treatment appropriate strength, toughness is very good, tempering hardness can reach 62 ~ 63HRC. DC53 toughness in cold die more prominent, tools DC53 made little cracks and cracking, greatly improving the life. Line cutting residual stress after high temperature tempering reduces residual stress. Therefore, the requirements of large molds and precision of mold line cutting after crack and deformation is suppressed. Practical feature: the advantages of the use of the line cutting punching die, cold mold, cold-drawn molding rolls, punch precision stamping die. Line cutting, precision blanking dies and stamping dies for various purposes. Plastic deformation tools difficult materials. Forging, deep drawing and Roll with the mold. Other high-speed blanking punch, stainless steel punch. Factory state: HB255 Chemical composition Carbon C: 1.00 Si Si: 0.91 Mn Mn: 0.32 chromium Cr: 8.00 Mo Mo: 2.00 Vanadium V: 0.28 P p: 0.007