Description:

This steel is in the category generally labeled asPlastic Mold Steels. Nickel and chromium are the alloying elements for hardnessand toughness. Cold work tool steel with good machinability, excellentpolishability, suitable for texturing. Improved through hardenability comapredto Mat. No.1.2311

Physical properties:

Ac1=715°C、Ac3=770°C、Ms=230℃

 Coefficient of linear expansion(20~200°C):12.7×10K

thermal conductivity:20°C, 29.0W/ (m·K),  200°C, 29.5W/ (m·K)

Heat treatment:
quenching 340~860°C, water, oil cooling ;

tempering 500 ℃, water, oil cooling.

Application:

Typically used for relatively low temperatureapplications such as die casting dies and injection molds, synthetic plasticmoulds dies, for large moulds.