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Call for Charpy toughness samples

Discussion in 'Shop Talk - BladeSmith Questions and Answers' started by Larrin, Jan 26, 2018.

  1. jdm61

    jdm61 itinerant metal pounder Knifemaker / Craftsman / Service Provider

    Aug 12, 2005
    You used to be able to get 9260 from Admiral. They sold it as 5160, but only in the round edged 1/4 by 1 inch bar stock. Uncle Al had some thick bar stock back in the day. It was 3/8 and 5/16 by 1.5 inches and IIRC one was 9620. Just can't remember which one. I have a ba of each but the white pen writing has worn off.
     
  2. Storm W

    Storm W

    242
    Feb 19, 2019
    Have I missed it or have we done the retest for 15n20.
     
  3. Willie71

    Willie71 Warren J. Krywko. Part Time Knifemaker Knifemaker / Craftsman / Service Provider

    Feb 23, 2013
    Yes, I did a bunch and of samples. They are awaiting grinding.
     
    hugofeynman and Storm W like this.
  4. Ocelot85

    Ocelot85

    407
    Feb 1, 2012
    @Larrin Was the CruWear standard ingot Cruwear or CPM-CruWear? Doesn't say CPM-CruWear but just want to make sure. I would think the CPM version would be inline with Z-wear?
     
  5. Larrin

    Larrin Gold Member Gold Member

    Jan 17, 2004
    Standard CruWear. Otherwise I would label it CPM.
     
  6. Ocelot85

    Ocelot85

    407
    Feb 1, 2012
    I figured as much, but I just wanted to make sure I wasn't missing anything. Thanks Larrin.
     
  7. Larrin

    Larrin Gold Member Gold Member

    Jan 17, 2004
    I have produced the following samples for machining. Some were sent to Mike Pierce, some to Rob Deker, and some are awaiting my decision to send them to someone.
    heat treatments.jpg
     
  8. Willie71

    Willie71 Warren J. Krywko. Part Time Knifemaker Knifemaker / Craftsman / Service Provider

    Feb 23, 2013
    From what I understand, z-wear and cpm-cru wear are identical.
     
    ShannonSteelLabs likes this.
  9. DeadboxHero

    DeadboxHero Triple B Handmade Knives, Big Brown Bear

    Mar 22, 2014
    PD-1 as well
     
  10. Ocelot85

    Ocelot85

    407
    Feb 1, 2012
    Everything about them looked identical to me between CPM-CruWear, Z-Wear and CTS-PD1. I just wanted to make sure I wasn't missing anything when I was looking at all the datasheets. Thanks.
     
  11. rodriguez7

    rodriguez7 KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Feb 1, 2009
    The only difference is I think 2 are second gen particle technology, and the other is first gen. So the second gen should be somewhat finer grain. But Larrins tests are showing there are no toughness differences, regardless of the claims made by Bohler and others.
     
    Willie71, Tin.Man, nsm and 2 others like this.
  12. Keith Nix

    Keith Nix

    32
    Jan 3, 2018
    Happy Independence Day everyone!
    I wanted to step in here and let everyone know I'm still holding samples of 12 steels, in 43 conditions, generously processed by @Warren Krywko. I've had them for what seems like ages.
    Between the birth of a grandson(he's ALL that!), the death of a dear friend, the sickness of my daughter(better now), receipt of a Reeder grinder as yet unassembled, an Evenheat KO18, and construction of a mini addition on my shop, I've let these samples fall to the back burner. I apologize to all who are as anxious for the results as I am.

    The good news is I've been processing on them all morning, and have time allotted tomorrow and Saturday as well. Hopefully they will be finished and on the way to Larrin in a week or so. Here are the steels:

    M4, 2 conditions.
    M2, 4 conditions.
    80CRV2, 6 conditions.
    A-11, 8 conditions.
    N690, 3 conditions.
    3V, 3 conditions.
    4V, 1 condition
    ZWear, 1 condition.
    ZTuff, 3 conditions.
    8670, 6 conditions.
    Elmax, 4 conditions.
    4VE, 2 conditions.

    As Hoss has said, Warren is s heat treating machine!
     
    Last edited: Jul 4, 2019
  13. ShannonSteelLabs

    ShannonSteelLabs KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Sep 9, 2015
    Super excited to see the results of this test.
    Vanadis 8 has me super curious.
    Any hardness readings on any of these samples? (All samples not just V8)
     
    William Entenmann likes this.
  14. Tin.Man

    Tin.Man

    817
    Sep 5, 2010
    Very looking forward to 80crv2 ranks among them I have a good guess but excited to see same with 3v. Any word on s7?

    Again thank you for all you guys do!
     
  15. Willie71

    Willie71 Warren J. Krywko. Part Time Knifemaker Knifemaker / Craftsman / Service Provider

    Feb 23, 2013
    S7 is on my bench. Haven’t had a chance to heat treat it yet,
     
  16. Larrin

    Larrin Gold Member Gold Member

    Jan 17, 2004
    I have hardness estimates for most of them based on hardness coupons heat treated separately. Exact hardness will be measured after they are machined and broken.
     
  17. Willie71

    Willie71 Warren J. Krywko. Part Time Knifemaker Knifemaker / Craftsman / Service Provider

    Feb 23, 2013
    Scott Grossman just sent me his heat treat recommendation for S7. Thanks Scott! Very generous community here!
     
  18. William Entenmann

    William Entenmann

    34
    Mar 20, 2019
    Sorry for the loss of your friend.
    My condolences!
     
  19. Larrin

    Larrin Gold Member Gold Member

    Jan 17, 2004
    How did it go?
     
  20. Willie71

    Willie71 Warren J. Krywko. Part Time Knifemaker Knifemaker / Craftsman / Service Provider

    Feb 23, 2013
    I just sent these off to Chuck for grinding. I got stalled out on heat treating with the vehicle breakdowns, then killing bandsaw blades, and finally running out of LN. Everything is back in order now, and I’ll get back at it.

    [​IMG]4C40E53F-CFB1-49B1-BFE9-7B108644AD01 by Wjkrywko, on Flickr
     

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