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How to heat treat metal to a black or yellow color

March 21, 2013

Q. Hi!
I wonder how to get the colors black or yellow at the "finishing stage" on heat treated metals?
I have metals that are quenched in oil or "atmosphere".
It could be great if I don't have to "paint" them after the heat treatment is finished!
/PM

Per-Magnus Mansnerus
- Falun, Sweden

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