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Does LC 200N work harden?

Discussion in 'Spyderco' started by sogflash, Dec 13, 2019.

  1. jpm2

    jpm2

    Nov 19, 2014
    I think you missed something.
    All steels are CATRA tested with serrated edges, according to Sal.
     
  2. Mike45ACP

    Mike45ACP

    775
    Nov 29, 2014
    How much more actual edge is on 3" serrated edge as opposed to a 3" straight edge? Is it possible a serrated blade holds its edge longer because it has more edge for the same length blade, or am I way off base?

    Mike
     
  3. Danke42

    Danke42

    Feb 10, 2015
    Yes I did miss where he said that.
     
  4. Danke42

    Danke42

    Feb 10, 2015
    Any other steel with a serrated edge or a plain edge?
     
  5. jpm2

    jpm2

    Nov 19, 2014
    Maybe I misinterpreted this.
     
  6. Danke42

    Danke42

    Feb 10, 2015
    I think Sal might be a bit of a poker player. Let's see if he'll show his cards.
     
  7. Sal Glesser

    Sal Glesser Moderator Moderator

    Dec 27, 1998
    What "cards" are you interested in seeing?

    Most steels will cut about about twice the plain edge with serrations. H1 will cut about 4X the plain edge.

    sal
     
    jpm2 likes this.
  8. jpm2

    jpm2

    Nov 19, 2014
    Are there any other steels in serrated edge that cut about 4x the plain edge other than H1?
     
  9. Danke42

    Danke42

    Feb 10, 2015
    OK, so plain edge LC200N will cut for the sake of discussion 52 cards & serrated LC200N will cut 104 cards.

    Plain H1 will cut the same deck of cards? Or more or less? Then the serrated H1 will cut four times that mystery number.
     
  10. James Y

    James Y

    Feb 18, 1999
    My take is not because it has more total edge length, because that would mean that a PE Pacific Salt would naturally have better edge holding than a PE Salt 2, which isn’t the case.

    I think it’s because the teeth penetrate the material and protect the inward curves/scallops. And I suspect that the concave scallops also create a somewhat reinforced edge.

    Jim
     
    Mike45ACP likes this.
  11. bbturbodad

    bbturbodad

    26
    Feb 18, 2019
    Are the SE and PE knives sharpened to the same angle or are we comparing the more obtuse angle of a PE knife to the thinner SE chisel grind?
     
  12. Danke42

    Danke42

    Feb 10, 2015
    Yes a good follow up would be to test V grinds vs. chisel grinds in the same H1 and see if the chisel out cuts the V.
     
  13. bearfacedkiller

    bearfacedkiller Gold Member Gold Member

    Jan 23, 2014
    Plain edges are usually 30 degrees or under and serrated edges are usually under 20 degrees. I would expect that to come into play.

    I cannot explain why H1 might hold an edge longer. Larrin did a good article on it recently. I did my own research years ago and science says that work hardening is caused only through plastic deformation. That can happen when an edge gets burnished but I don’t see how that would increase edge retention but I guess anything is possible. If this phenomenon is real then I too would love to know why.
     
    uncle willie likes this.
  14. uncle willie

    uncle willie

    94
    Mar 31, 2013
    Wow - I don't know that I've ever heard or read that before. Very Interesting for sure. Seems like it would be a contributing factor, among other things.

    u.w.
     
  15. cbrstar

    cbrstar Gold Member Gold Member

    912
    Sep 7, 2015
    Not gonna pretend I fully understand this stuff so this is a guess. But if the metal is cold rolled to form martensite to create hardness. Then the further deformation of putting the spyderedge on the blade could be creating more martensite and creating even more hardness just on the edge.
     
  16. Sal Glesser

    Sal Glesser Moderator Moderator

    Dec 27, 1998
    H1 is not martensite.

    sal
     

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