CPM M4 steel commonly referred to as M4 is high-speed tool steel manufactured by Crucible Industries, a company in the US, following the Compacted Powder Metallurgy. It contains high amounts of Vanadium and Tungsten in its composition, giving it a boost in wear resistance and toughness. This makes it better than M2, M3, and M7 steel varieties. The improvements in toughness and wear resistance make this steel a top choice for premium and custom knives.…

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