[TheForge] Re: [TheForge] Re: [TheForge] Heat Treating 5160 w as Welding 5160

Sat Aug 30 07:09:01 2003

        Ed,  It is my belief the H13 doesn't start to temper back until
800-900 degrees, so I dont' think your home oven is touching it.

Ralph

----- Original Message -----
From: "Ed F" <[email protected]>
To: <[email protected]>
Sent: Friday, August 29, 2003 11:14 PM
Subject: [TheForge] Re: [TheForge] Heat Treating 5160 was  Welding 5160


>
> ----- Original Message -----
> From: "David E. Smucker" <[email protected]>
>
> > The other one I don't understand is the great desire to NOT TEMPER -- it
> can
> > be done quickly and safely for almost any tool.  Why leave it out.  At
the
> > very least put it in the oven at 350 *F for an hour.  It gives only a
> small
> > reduction in hardness and a big increase in toughness.
> > Dave Smucker
>
> Are you saying that about all tool steels?  I normally heat H13 to bright
> orange then let it cool in vermiculite.  Then I put it in the oven as high
> as it will go for at least an hour at the high temp.  I've often repeated
> this 2 or 3 times.  I asked the tool steel salesman with Uddelholm about
> this procedure (normally it's done at a higher temp., but I don't have
tight
> control in the forge and the chart for H13 seemed to me to say that lower
> temp. would work.).  He gave me a sort of weak "yes, it should work."
>
> If I'm doing any good with this last step it'd be nice to have some
> corroboration.  It's kind of a pain to do it right after it cools in the
> vermiculite ('cause I wanna' be home) and it sucks juice in my electric
> stove.
>
> Ed
>
>
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