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working with A-2

Discussion in 'Hammer & Tongs' started by dougmo01, Mar 11, 2016.

  1. dougmo01

    dougmo01

    4
    Mar 11, 2016
    Hi all, fairly new to the craft and have made a few serviceable knives from mystery steels.
    i have a large chunk of A2 that from a die and was curious about how to work it.
    Its definitely hardened, a file wont hardly touch it and am curious if it will soften some after forging
    thanks,
    dougmo01
     
  2. i4Marc

    i4Marc KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Oct 19, 2011
    Get some A-2 bar stock in dimensions appropriate for making a knife. It will already be annealed and ready to work.
     
  3. dougmo01

    dougmo01

    4
    Mar 11, 2016
    thing is i like re purposing metal plus this was free.... so any advice would be great
     
  4. i4Marc

    i4Marc KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Oct 19, 2011
    Any pictures or dimensions? What kinds of tools or machines do you have at your disposal? Do you have a forge, heat treat oven, power hammer or metal bandsaw?
     
  5. weo

    weo KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    980
    Sep 21, 2014
    double
     
    Last edited: Mar 11, 2016
  6. weo

    weo KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    980
    Sep 21, 2014
    According to one of my Tool Steel books: anneal A2 @ 1550-1600F, slowly cool @ ~ 30-40F/hour to 1000F after which faster cooling rate can be tolerated. A2 can be isothermally annealed by cooling to 1400F and holding for 4-6 hours then air cooling.
    To minimize warpage on hardening, a stress relief anneal at 1200-1300F may be done before final finish machining.
     
  7. mete

    mete Gold Member Gold Member

    Jun 10, 2003
    What you have now is tempered martensite. What you want is spheroidized annealed. way to do it is heat at 1200 F for 2 hours if you don't have thick material .Othrwise add more time.
     

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