3. Conclusion

The data contained in this article, concerning both the physical and mechanical characteristics of tool steels, complements that of article [M 4 590] relating to standard NF EN 4957. These data are useful for assessing the machining and grinding conditions of different grades, and for calculating the thermomechanical stresses of hot-working tools, among other things. They also help to select the most appropriate grade for the conditions of use, as well as the heat treatment providing optimum properties.

This document also provides some data on grades developed since the standard was published,...