Tool Steel Rectangle Bar CPM M4 is a high-alloy, air-hardening tool steel produced through powder metallurgy, offering exceptional wear resistance, toughness, and compressive strength. This rectangular bar steel is ideal for applications requiring high hardness and durability, such as cutting tools, dies, punches, and various industrial tooling components subjected to heavy loads and abrasive environments. Its unique properties make it suitable for demanding applications where dimensional stability and wear resistance are crucial.