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Recent content by Metals101

  1. Metals101

    Austempering Core Hardness Problem

    I should also add that the chemical composition of the steel is in spec.
  2. Metals101

    Austempering Core Hardness Problem

    Cold forged then carburized and slow cooled.
  3. Metals101

    Austempering Core Hardness Problem

    We've been austempering a 1/4" section of 10B21 steel successfully for several years using the following process: Heat to 1650F. Hold 30 minutes. Quench into 480F salt bath. Hold in salt for 2.5 hrs. We normally achieve core hardnesses of 40-46 HRC. Recently we've seen core hardness drop to...
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