2711 mold steel 
 2711 high polishing precision plastic mold steel, Buderus mold steel, 350 ~ 395HBS of the implementation of standards, uniform hardness, with excellent processing properties, cutting polishing and electrical erosion. Buderus BUDERUS - 2711 vacuum melting of chromium - nickel - manganese alloy steel, the factory has been heat-treated hardness of HB350-395. Organized and meticulous, ultra-low sulphide and oxide content, properties throw polarimetry, and etching the good performance, high strength, high toughness, impact resistance, high temperature performance is superior than the 2311,2738 and other surface nitriding for the manufacture of cast polarimetry high-performance, the pressure of the heat out, injection of the mold. Features: pre-hardened nickel chrome molybdenum alloy tool steel, quality and robust pressure, easy polishing, nitriding chemical composition (%): C: 0.50 Cr: 0.8 of Mn: 0.7 of Mo: 0.3 of Ni: 1.8 V: 0.1