MaterialsDescription:
30CrMnSiNi2A Steel is a ultra-highstrength steel, high hardenability and toughness better. Thelow-temperature tempering steel oil quenching (250 ~ 300 ) higherthan the strength of 1700 MPa; Austempered can be 180 to 220 and270 to  two temperature range. In order to ensure a higherdegree of the steel yield strength, and in order to maximize thetoughness of steel and plastic, steel Austempered should be abovethe decomposition temperature of retained austenite and as close aspossible to lower the temperature tempering brittle temper Thiswill ensure that there are high and low fracture toughness of thefatigue crack propagation rate. Suitable for the manufacture ofhigh strength, toughness good large and medium-sized plasticmould