When working on stamping molds, they must withstand loads such as impact, vibration, friction, high pressure, stretching, bending, and twisting, and even work at higher temperatures (such as cold extrusion). The working conditions are complex and prone to wear, fatigue, fracture, deformation, and other phenomena. Therefore, the requirements for the material of mold working parts are higher than ordinary parts.

Due to the different working conditions of various stamping molds, there are also differences in the requirements for the materials of the working parts of the molds.

1. The requirements for punching die materials require high wear resistance and hardness for the working parts of thin plate punching dies. For thick plate punching dies, in addition to high wear resistance and compressive yield point, in order to prevent mold fracture or edge collapse, they should also have high fracture resistance, high bending strength and toughness.

2. The requirements for deep drawing die materials require the working parts of the die to have good adhesion resistance (anti bite), high wear resistance and hardness, certain strength and toughness, and good cutting performance, and to have minimal deformation during heat treatment.

3. The requirements for cold extrusion die materials require that the working parts of the die have high strength, hardness, and wear resistance. To avoid impact fracture, a certain degree of toughness is also required. Due to the significant increase in temperature generated during extrusion, it should also have a certain degree of thermal fatigue resistance and thermal hardness