Which PM2 steel wins?- K390 vs. Rex45 vs.4v

Discussion in 'General Knife Discussion' started by stabbyshooty, Jul 2, 2020.

Which steel wins in existing coated PM2- K390, Rex45, 4V ?

  1. 4v

  2. K390

  3. Rex45

  4. Just show me the results

Results are only viewable after voting.
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  1. stabbyshooty


    Jul 2, 2020
    Between these 3 steels, which PM2 would reign supreme?

    Rex45, K390, 4v


    Hardness would be indexed to tested production hardness of the existing Spyderco PM2's exclusively.

    Edge geometry considerations can be maximized to post-factory sharpening.

    Corrosion is not a factor as blades are coated in this imaginary scenario.

    Non-answers like "not noticeably different", "would be better in a fixed blade", and comparisons to other steels not listed in the question are disqualified.

    This is a head-to-head-to head battle for which would be the overall champion with your rationale explained.
  2. hhmoore

    hhmoore Gold Member Gold Member

    Feb 7, 2014
    If all three are coated, this competition is a fail from the start.
  3. allenC


    Jun 18, 2000
    I have no experience with any of those blade steels, and I would be rather surprised if there are many here who have lots of real world use experience with all three steels.
  4. stabbyshooty


    Jul 2, 2020
    That's 2 disqualified comments that add nothing to the thread. Thumbs up.
    rizza32 likes this.
  5. allenC


    Jun 18, 2000
    Make that 3 ^^^:rolleyes:
    And 4.
  6. ScooterG

    ScooterG You mean Ireland? Yeah, it’s mine. Platinum Member

    Mar 15, 2016
    This post is disqualified for not meeting the OP standards. :)

    Supreme at what?

    From what I’ve heard from a guy who says he knows stuff...because internet.
    K390 has best edge retention and the best strength at high hardness.
    Rex and 4v have best toughness and hold a good edge (like m4 - am I disqualified not too?).

    In my very limited and highly irrelevant opinion, Rex is over rated, 4v is great all around and K390 holds a great edge but sharpening isn’t a walk in the park.
    Last edited: Jul 2, 2020
    Therom, Insipid Moniker and Danke42 like this.
  7. hhmoore

    hhmoore Gold Member Gold Member

    Feb 7, 2014
    I'll add another disqualifying response:
    The best one is the version one was lucky enough to score at the release price.
  8. tomhosang


    Feb 17, 2017
    Based on what we've seen with the hardnesses on these 3 in the PM2, it should be REX45 and it wouldn't really be that close if we're talking edge retention. REX has come in between 65 and 67 pretty consistently, K390 has been a bit disappointing at 63 to 64 , and 4V has tested at 62.5 on a few samples. REX at 65 should perform kinda close to K390, but if you get one that's around 67, it's a whole different ballgame.
  9. hhmoore

    hhmoore Gold Member Gold Member

    Feb 7, 2014
    And a third:
    If you bought bought them to flip, the best is the one that gets the biggest return... making all of the OP's criteria just that much more irrelevant.
    allenC likes this.
  10. craytab

    craytab Gold Member Gold Member

    Jan 26, 2012
    Disqualified! lol....

    I'd probably choose 4v because it has the least characters. I like my digi-cam S30v model just fine though so maybe I should be disqualified too!
  11. Danke42


    Feb 10, 2015
    You could throw a blanket over the 3 steel you picked and call them pretty well equal. For this contest it would come down to which one you could go out and buy today.
    Grenock, allenC and Yo Mama like this.
  12. Roy Batty

    Roy Batty Y'all can sling load DEEZ NUTS Platinum Member

    May 25, 2016
    None of those. Maxamet is the best and it’s also readily available.
  13. Twindog

    Twindog Gold Member Gold Member

    Apr 6, 2004
    I'd go with K390 for the wear resistance. The PM is a little knife, so toughness is less likely to be a big issue, except maybe at the tip, which is easy to fix.
  14. Insipid Moniker

    Insipid Moniker Gold Member Gold Member

    Feb 28, 2011
    Smatchet. Next question.
    craytab likes this.
  15. abcdef


    Oct 28, 2005
    Poll disqualified. When more than two are involved, the choice is among as opposed to between.
  16. Boru13

    Boru13 Super Moderator Staff Member Super Mod Moderator

    Apr 25, 2000
    Disqualified ;)
  17. stabbyshooty


    Jul 2, 2020
    Everyone is disqualified. This was a trick post. The correct answer is Cru-Wear.
    oldmanwilly likes this.
  18. Boru13

    Boru13 Super Moderator Staff Member Super Mod Moderator

    Apr 25, 2000
    Good, thread closed then.
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