Torch Hardening 15n20, 80CrV2, 8670, 1095, Etc.

[me2]

Is anyone currently using a torch to harden these or other plain carbon or low alloy steel? How well does it work? Have you had hardness testing or micrographs made?

 

[Bill DeShivs]

I use a torch to harden (and temper) automatic springs.
Works great-if you know what you are doing.
Sucks if you don't.

 

[Bill DeShivs]

I have thousands of springs in service. 4 have failed, and they were from a piece of bad steel.

 

[Kevin McGovern]

I skipped past just using a torch to using a paint can forge, and a torch. I'm glad I did. It is easier to get an even heat in a simple, easy to make paint can or 2 brick forge than a torch in open air. I highly recommend building a small forge. it's simple and cheap.

 

[120 Acres]

I've done a few 1095 blades, though I have never tested them, it worked very well for me.

 

[Willie71]

I think they will harden, but without at least a 5-10 minute soak, you are leaving performance on the table.