Injection molding is a highly specialized forming process by injecting heated and plasticized thermoplastic or thermoset materials into a cooler mold cavity at high pressure. Choosing the right mold steel is crucial to mold performance and overall production efficiency.

Ideal plastic mold steel properties include high polishability, high corrosion resistance, wear resistance, cracking resistance and high thermal conductivity.

In actual mold production, the working conditions are complex, and the recommended materials need to be combined with the actual situation.

The following is a comparison table of commonly used injection molding mold steels in different countries (including the chemical composition of the materials).