Description:

This steel is in the category generally labeled as Plastic Mold Steels. Nickel and chromium are the alloying elements for hardness and toughness. Cold work tool steel with good machinability, excellent polishability, suitable for texturing. Improved through hardenability comapred to 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 temperature applications such as die casting dies and injection molds, synthetic plastic moulds dies, for large moulds.