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Recent content by Jeff37

  1. Jeff37

    Permitted residual elements in steel.

    Hi, Does anyone know of any specifications that define permitted levels of residual elements that aren't included in the material spec, for AMS steel specs? Thanks,
  2. Jeff37

    Forging Temperatures

    Hi, I'm wondering if anyone can help with a very basic question. I've often looked up recommended forging temperatures for various metals in supplier datasheets or books and they'll usually say something along the lines of " typically forged in the range of 1010-1095°C" or "Forging Temperature...
  3. Jeff37

    Issue with tensile test of 61HRC tool steel

    Thanks guys. Don't worry Screwman. It's not used in tension - just a hoop we have to jump through to certify it.
  4. Jeff37

    Issue with tensile test of 61HRC tool steel

    Hi All, I have a strange requirement to tensile test a tool steel at 61HRC with spec limits of 2700MPA UTS, 1% elong & 2% ROA and it's not going well and our lab has no experience of testing material this hard. To start with, the threads on the tensile piece are fracturing, making it very hard...
  5. Jeff37

    Forging Breakup - M50 Tool / Bearing Steel

    Hi All, I was wondering if anyone can help me understand a problem I'm experiencing. I'm trying to produce a small scale hammer forging from M50 and having trouble with break-up. I know that these grades can have issue with liquation causing breakup but the temperature we're using (1120°C) is...
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