Performance: bite flower performance, high strength, high toughness, impact resistance Uses: Suitable for casting molds, support tools, mold basic elements GS-2711 high-polish precision plastic mold steel, performance standards 350-395HBS, uniform hardness, with excellent processing performance, power polishing and cutting loss. Buderus BUDERUS - 2711 vacuum melting of chromium - nickel - manganese alloy steel, heat treatment factory, the factory hardness HB350-395. Meticulous organization, sulphide and oxide content of the ultra-low, good polishing of optical performance, good bite flower performance, high strength, high toughness, impact resistance, high temperature performance is superior than 2311,2738, etc., can be nitrided surface. Uses: suitable for high hardness, high toughness and high polish of the mold. For the manufacture of high performance parabolic optical, requiring heat of extrusion, injection of mold.