Which is better high speed or tool steel when applying the TRD coating?
Piercing punch or cold forging die is a popular application for the TRD process, but it doesn’t necessarily mean that high speed is superior to tool steel as a substrate material. High speed is only better for heat resistance or high hardness. It is more difficult to get hard, has a higher hardening temperature, limited availability in the market, and cost more. High speed does not always perform better when it comes to wear resistance compared to regular die steel which shows better properties depending on the condition. If you are considering applying a TRD coating to high speed, hot or warm application such as hot forging process and metal cutting tools would be the only application that would benefit you, since high speed has better heat resistance.
