
CPM M4 Steel: Complete Guide to Composition, Properties, Heat Treatment, Edge Retention, and Knife Performance
CPM M4 Steel An Independent Guide CPM M4 is one of the most interesting high-performance tool steels used for demanding cutting applications. It was developed for industrial tooling rather than originally being designed as a kitchen or outdoor knife steel, yet its combination of very high wear resistance, high hardness, excellent edge stability, and useful


















