[TheForge] 4140 vs 4340

Wed Mar 27 20:08:00 2002

By "hammer die" I was assuming like the top and bottom dies that are fixed in
the hammer. At a given hardness, I think 4340 is much tougher. "When
overstressed" ALL materials fail rapidly! It's even part of the definition of
overstressed I think (if not, it should be!).

I like my hammer dies to be around 50 Rc. and I can't get that from 4140.

grant

Dick Nietfeld wrote:

> When used as a hammer die, 4340 fails rapidly when over stressed.  4140
> gives a little warning and is the preferred material of the 2.
>
> Dick
>
> ----- Original Message -----
> From: "Dave Brown" <[email protected]>
> To: "TheForge" <[email protected]>
> Sent: Tuesday, March 26, 2002 3:48 PM
> Subject: [TheForge] 4140 vs 4340
>
> > In a recent thread 4340 was mentioned as good die material.  Does anyone
> > have an opinion about 4140 for this same application?  Why?  I can get
> this
> > easier than I can get 4340.
> >
> > Dave Brown
> > Heritage Smithing
> > Green Bay, WI
> > ABANA, UMBA, GoM, MODA, ARG
> >
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