CPM M4 High Speed Tool Steel


CPM M4 is a special purpose high-speed tool steel, containing a high level of vanadium. M4 is tougher and more wear resistant than M2 and M3 in high speed cutting applications involving light cuts.

CPM M4 also comes in several modifications including high carbon (HC), which offers a better hardening response during treating. Additionally, the high sulfur (HS) modification, standard in larger diameter stock, allows for improved machinability and grindability over traditional M4 steel.

As with all CPM steels, CPM M4 us created using Crucible’s patented Crucible Particle Metallurgy process, which provides a highly homogeneous, stable, grindable, and tough product compared to steels created using traditional metallurgy.

Whether you need an industrial blade made from a CPM steel, another type of tool steel, tungsten carbide, or even ceramic, Carolina Knife Co. has the material you need. Please give us a call today so that we can begin manufacturing your high-quality industrial blade.

Chemical Characteristics


Carbon 1.42%
Chromium 4.00%
Molybdenum 5.25%
Vanadium 4.00%
Tungsten 5.50%
Manganese 0.30% - 0.70%
Sulfur 0.06% - 0.22%

CPM M4 Links


Crucible Data Sheet
Carolina Knife - CPM M4 High Speed Steel