HPM2 pre-hardened mold steel Hitachi Metals HPM2 hardness of HCR29-33 ℃, mold can be used directly without further heat treatment. Large section of the material hardness is relatively uniform balanced by excellent cutting performance, high compressive strength, wear resistance, good corrosion resistance, suitable for large-scale production of plastic molds. Main applications: opaque mold (TV mold, air conditioner shell mold); auto parts, used resin products, fixtures, etc.. Features: cutting and good, without heat treatment, hardness uniformity