Rockwell Hardness Scale and Blade Forging by Kevin Harvey, MS

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  1. ABSwebmaster
  2. American Bladesmith
  3. American Bladesmith Society
  4. Rockwell Hardness
  5. bladesmithing
  6. heat treating
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Great video! Thanks for the refresher, Kevin and the ABS

Brad

braddles
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I have no practical smithing experience, but none the less that chart in the video looks wrong to me, since it seems to imply that HRC decreases consistently with increased quenching temperature. I would have expected a rising curve (the origin point being original stock at ambient room temp) that rose towards and through the sweet spot range, continued higher (too hard/brittle), and then flattened to a maximum before dipping into a region where it begins to degrade them melt. That's my mental picture anyway ... i could be wrong, or perhaps I didnt understand what the narrator was trying to illustrate.

RovingPunster