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I Forge Iron

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  • 1 month later...

The color is only an indication of what temperature the surface of the steel go to. (not a very good indicator by the way)  It does not indicate anything about how complete the tempering process is.

Generally speaking, you'll want more than one temper cycle regardless of what color the steel turns.  There are numerous descriptions of the changes that happen to the structure of the steel around here that would explain it better than I can.

Edit: Oops, sorry, I just realized this is an older thread.

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