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Unread 10-15-2018, 03:40 PM   #19
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Paul Harm
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I have a question. I've read on another web site that there is color case hardening and case coloring. The second one is done at a temp, but not enough to case harden the parts. It's more of a chemical process. It was also said that Turnbell [ along with at least Pietta ] uses the second process, but no talk if they also used a hardening process. Can anyone shed any light on this ?
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