View Full Version : General Metalworking Bluing annealed tool steel

Everett Fulkerson
07-20-2013, 11:18 AM
Despite my best google-fu, I cannot find a straight forward answer to this question.

If you were to grind an edge on unhardened tool steel and caused a bit of bluing, would this have a negative effect on the cutting edge after heat treating, or does the process of heat treating "reset" the metal?

Thanks for any insight

Be Good

Dennis Ford
07-20-2013, 10:13 PM
The heat treating does "reset" the hardness. After heat-treating, the tool hardness will be determined by the steel and the most recent heat treatment.

George Carlson
07-20-2013, 10:49 PM
Also, finish grinding is usually done after heat treating, this is where you would have to be careful.

Everett Fulkerson
07-21-2013, 9:25 AM
Thanks for the replys. I've been grinding post HT but thought I could speed things up by grinding pre HT.

Be Good