[TheForge] Fwd: Re: [GoM] 4340 steel

[Dave Brown]

I receive the following post from the Guild of Metalsmiths and thought it 
would be appropriate to pass it on to theforge, especially since the 
subject of die steels came up.

>4340 is basically the same as 4140 with the addition of 1.5/2.0 % Nickel
>and is usually considered to have slightly better fatigue properties.  It
>is more susceptible to quench cracking (Should not be water quenched) and
>should be tempered back immediately after quenching.
>
>thanks,
>Dave Tokle
>Metallurgical/Quality Engineer
>SPX Service Solutions

Dave Brown
Heritage Smithing
Green Bay, WI
ABANA, UMBA, GoM, MODA, ARG