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  1. Steve898

    identify unusual steel composition

    Chromium 3.27 Carbon 0.41 Molybdenmum 0.96 Manganese 0.54 Ni .22, Si .21, V .19, Cu .25, Al .02 Remainder is iron What is this grade? I have looked through all my referrence books, no luck with the chromium content. Thanks in advance
  2. Steve898

    Alphatizing or Chromizing

    Alphatizing, developed in the US prior to 1964, is a type of Chromizing. Google (and other) searches come up with a lot of foreign language hits which are no help to me. Does anybody alphatize or hard chromize in the states? This is NOT hard chrome plating, but rather a diffusion process...
  3. Steve898

    Quench oil fire on steel parts after batch ht/quenching

    What type of Fire Extinguishers do Heat Treaters typically have on hand? I have seen ABC dry chem, halon, and CO2 at various places I have worked. I note that ABC dry chem puts the fire out, but that the fire relights, like a joke birthday candle, the stream of extinguishing dust is stopped...
  4. Steve898

    Chromizing

    I am looking for a US source for chromizing. My apologies if this is in the wrong forum. Thanks
  5. Steve898

    Chromizing-Boronizing

    What effect on UTS and fatigue properties of heat treated steel(50 HRC)does chromizing have? I believe the steps are hard chromize, harden, then temper to 50 HRC. The alloy is either plain carbon steel or low alloy carbon steel. I am curious about boronizing as well.
  6. Steve898

    1144 carburized

    Man, I love 1144 questions. As usual, everyone that is not a metallurgist wants to use it for everything. I have induction hardened, flame hardened, marquenched, austempered (!), oil and water quenched, fixture tempered, carburized, unameitidunit. It just machines so well and is much cheaper...
  7. Steve898

    52100 ductility

    What is the ductility of 52100 tempered (after quenching) at various temperatures? I am looking for a published chart if possible. Also, would marquenching vs oil quenching have an impact on ductility?

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