DHA1 is a kind of high quality hot work die casting steel, has excellent high temperature strength and wear resistance, uniform distribution of fine spherical carbides, good heat balance and hardenability, high temperature tempering and softening resistance, excellent high temperature impact and thermal fatigue resistance, high temperature melt resistance and good machinability. These characteristics make DHA1 die steel still maintain good performance under harsh high temperature, and high pressure environment, is widely used in all kinds of mold manufacturing. In addition, DHA1 die steel is also suitable for the manufacture of aluminum, zinc die casting, thermit extrusion casting, stamping die, die casting die parts, plastic die and other mechanical parts, shows its wide application and importance in the field of die making DHA1 can be used in the manufacture of taillight di…