Heat treating steel is a black art. Try it and see. One short story. I was supposed to heat treat a piece of steel for a test. I heated it and cooled it. The instructor was going to test it. I said you don’t have to test it, it is hard. I threw it down on a cement floor and it shattered into about three pieces. He gave me a B (for enthusiasm, I guess).
Lol...agree. Lots of wasted time an effort. Most of my tempering was done in a kiln using a foil envelope an paper to burn off the o2 an keep the carbon content. Now I’m learning from many visits to hammer in’s put on by local knife makers that have their own forges.
Always something new to learn..... Stay Safe !