Any idea how to figure out what steel this is?

Discussion in 'Shop Talk - BladeSmith Questions and Answers' started by aperdue, Jan 21, 2015.

  1. aperdue

    aperdue

    107
    Aug 2, 2010
    So, a couple years ago , I decided I was going to make my first blade. Well, fast forward to now, I am finally making it, but for the life of me, I can't remember what steel I bought. I am thinking it is D2. I bought it from Texas knife supply and almost positive I was choosing from 01 or D2. Like I said, I bought it about two years ago. It is not a stainless as it does have a rust spot on it, but not bad for that long in my garage. Here are a couple pics, hopefully they will help:

    [​IMG]
    [​IMG]
     
  2. samuraistuart

    samuraistuart KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Dec 21, 2006
    No way to tell by pics. If it is resisting rust, tho.......I bet it is NOT O1. That stuff will rust if you look at it wrong. Stainless steel could have a rust spot on it just like that if left in a garage for a year. It is stain LESS after all.
     
  3. aperdue

    aperdue

    107
    Aug 2, 2010
    Well, I know it isnt stainless. At the time I bought it, I was dead set against it. I am sticking to thinking it is D2. Either way, O1 or D2, should be ok heat treating to 1500 right? Seems like the main difference is in tempering from what I have been reading. I will probably have it heat treated as D2.
     
  4. PEU

    PEU Gaucho Knifemaker Knifemaker / Craftsman / Service Provider

    801
    Aug 6, 2006
    spark test may help, take a photo of the sparks it makes with a 36 belt. if your doubt is o2 or d2 and you have another piece of steel maybe ferric chloride can help, 02 should be darker if compared to d2


    Pablo
     
  5. Stacy E. Apelt - Bladesmith

    Stacy E. Apelt - Bladesmith ilmarinen - MODERATOR Moderator Knifemaker / Craftsman / Service Provider

    Aug 20, 2004
    D2 should resist rust a lot more than O-1. Sand it clean and stick it in water for five minutes. Take it out and lay it on the bench. If it is O-1, it will be pretty much covered in rust the next day.

    A second way would be to take a piece and heat it to just a bit above non-magnetic for about 60 seconds. Quench in oil. If it fully hardens, it is O-1. D2 has to be heated to 1850F and held for 10-30 minutes to austenitize.
     
  6. samuraistuart

    samuraistuart KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Dec 21, 2006
    That's right, Stacy has a good point. Harden it at 1500 and see what that gets you.
     
  7. aperdue

    aperdue

    107
    Aug 2, 2010
    dont really know if it helps. 36 didnt really throw too many sparks, probably about time to change the belt. disk sander on the side did a little better:
    [video=youtube;JLKujbaGjM4]http://www.youtube.com/watch?v=JLKujbaGjM4[/video]
     
    Last edited: Jan 21, 2015
  8. John Katt

    John Katt

    Mar 19, 2012
    Call texas knife supply and see if they will look up your order, im sure they keep records
     
  9. aperdue

    aperdue

    107
    Aug 2, 2010
    That was actually the first thing I did. Since I bought it in person, they had no record.
     
  10. aperdue

    aperdue

    107
    Aug 2, 2010
    I don't have the equipment to heat treat, but will try to see how it rusts overnight.
     
  11. John Katt

    John Katt

    Mar 19, 2012
    So much for my bright idea LOL
     
  12. PEU

    PEU Gaucho Knifemaker Knifemaker / Craftsman / Service Provider

    801
    Aug 6, 2006
    video is marked as private... can't be seen


    Pablo
     
  13. aperdue

    aperdue

    107
    Aug 2, 2010
    Hopefully that fixed it
     

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