[TheForge] RE: 4140 heat treat

Mon Sep 15 21:27:00 2003

For 4140 hammers, I have had good luck with heating to critical, soaking and
quenching in oil.  I use Texaco "Quenchtex B"  Temper in oven at 400 to 450
F, until purple/blue.  I have yet to have one fail.  Grant
----- Original Message ----- 
From: "Bob Ehrenberger" <[email protected]>
To: "theforge" <[email protected]>
Sent: Monday, September 15, 2003 9:59 AM
Subject: [TheForge] RE: 4140 heat treat


> The method recomended by John Murry (who has made hundreds of hammers from
> 4140) is the bring the face to critucel by placing face down on the coal
> fire, and cool with running water poored on the face of the hammer.  He
> either dumps a 5 gal bucket of water on each hammer or  uses running water
> from a hose.  For the pien he heats pien down on the fire and then cools
in
> the slack tank by holding pien up and using a dipper to dump water over
the
> pien.  That way the pien isn't quite as hard as the face.  He then tempers
> in the oven at 400deg.
>
> Of course before heat treating he anneals them and does the grinding on
them
> while soft.  When heat treating he is careful to not let the eye get too
hot
> so it stays soft and is not likely to crack under use.
>
> Bob Ehrenberger
> Shelbyville, Mo
>
> Date: Sat, 13 Sep 2003 10:51:08 -0400
> To: [email protected]
> From: klgeorge <[email protected]>
> Subject: [TheForge] 4140 heat treat
> Reply-To: [email protected]
>
> I got some 4140 1 3/4" square and am going to attempt to make some
> hammers.What's the heat treat?
>
>
>
>
>
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