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CPM M4 steel?

Discussion in 'General Knife Discussion' started by colubrid, Nov 22, 2009.

  1. colubrid

    colubrid Gold Member Gold Member

    Nov 26, 2005
    What's this CPM M4 I am hearing about? How does it compare to other steels and what is its makeup?
  2. SteelSnob


    Sep 7, 2009
    There will be a ton of stuff if you search here
  3. AfterTFD


    Oct 28, 2007
    It's a highly wear resistant modern tool steel useful for all kinds of applications.

    If stainlessness is not a high priority and wear resistance is desired more than toughness it is perfect. Otherwise other steels exist that are at least equally good candidates if we ignore cost (h1 stainlessness, s3V toughness, etc).

    If all that sounds a bit vague to you that's because that's how reality works.
  4. Jason B.

    Jason B. KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Jun 13, 2007

    You may have it a bit confused, CPM-M4 is both very tough and very wear resistant. Its not stainless but it is more stain resistant than most carbon steels, I would give it similar stain resistance to D2. It is also fairly easy to sharpen though waterstones and arkansas stones would not be my first suggestion.
  5. bladebertt


    Sep 20, 2007
  6. H0B0J0


    May 2, 2008
  7. bgudowski

    bgudowski Banned BANNED

    Aug 31, 2009
  8. antonio_luiz


    Jul 23, 2008
  9. Ben Dover

    Ben Dover

    Aug 2, 2006
    CPM M-4 is probably the best overall cutlery steel available in the world today.

    It wins virtually all of the cutting competitions.

    Today, at least, it's the Rolls Royce of Knife steel.:thumbup:

    My last 4 knives have been CPM M-4. After using them, I'd be reluctant to buy a knife made from any other steel, unless I was working in salt water, and then I'd buy CPM S90V.

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