Annealing 15n20

[Sprayman]

Hello, Bladesmiths;

I have a small kiridashi that I just heat treated and am now annealing at 425, twice, for 60 minutes. It's 15n20 at .096. Does that sound about right?

Thanks,

Sprayman

 

[Natlek]

Hello, Bladesmiths;

I have a small kiridashi that I just heat treated and am now annealing at 425, twice, for 60 minutes. It's 15n20 at .096. Does that sound about right?

Thanks,

Sprayman

You mind you tempering 15n20 , right ? 15n20 is very tough steel , for knife I temper them on 360 and my parang machete I temper on 400 and they hold pretty good .Anyway wait for advice from more experienced maker

 

[DevinT]

Hello, Bladesmiths;

I have a small kiridashi that I just heat treated and am now annealing at 425, twice, for 60 minutes. It's 15n20 at .096. Does that sound about right?

Thanks,

Sprayman

We use the term tempering instead of annealing. I think 325-350f would be good for this kind of knife. Maybe JT will chime in on this.

Hoss

 

[Sprayman]

Right....right. Tempering, not annealing. Thanks for correcting me on that, guys.

 

[DevinT]

Right....right. Tempering, not annealing. Thanks for correcting me on that, guys.

The term annealing is used in place of tempering in some European countries.

Hoss

 

[E.Carlson]

350 gets me around 62 rc on my equipment.

 

[skillgannon]

Just doing in my forge I think I also got 61 to 62. I tested several pieces and can't remember if the top of my head. It is very easy to work with.

 

[Sprayman]

Well here in the good 'ol U.S. of A, we say tempering. Making knives great again!

 

[ashwinearl]

Speaking of annealing 15n20, I got mine from Alpha Knife and it comes a little harder than I am used to. I killed some drill bits the last time I used the bar. I read here about heating it up and then letting it slow cool in some Ash to soften it up for easier machining.

Is that correct? Can I heat it an let it dry in the air, or will that cool too fast?

 

[E.Carlson]

Speaking of annealing 15n20, I got mine from Alpha Knife and it comes a little harder than I am used to. I killed some drill bits the last time I used the bar. I read here about heating it up and then letting it slow cool in some Ash to soften it up for easier machining.

Is that correct? Can I heat it an let it dry in the air, or will that cool too fast?

Just get some coblat bits in the sizes you use. Run them slowish.