Re: [CAD_CAM_EDM_DRO] 4130 4140 how to heat treat ?

smcdonal wrote:

> Can someone here tell me the method used to heat treat these to metals.
> I am makeing a sin vice that is 9" long 4" wide and has a jaw depth of
> 1.750 out of 4130. I am also makeing some bending dies from 4140 and I
> have the oven and I have quenching oil that I used to harden O1 drill
> rod but I have ben given different conflicting versions on how to heat
> treat these to types of metal.
>
> some say 4130 water harden
> some say 4140 oil harden
>
> and some say oil for both or water for both?
>
> Does someone here have the correct temp and what to quench these to
> metals in. I am looking to get 52RC on these parts.
> Regards
> Stan

Hi Stan:

What you need is this book from ASM (American Society of Metals):
http://asm.micronexx.com/cgi-bin/SoftCart.exe/BOOKSTORE/PAGES/06542G.htm?L+asmbooks+hunz6559+961233354

No - I haven't bought my set yet, but I'll bet there is a copy you can glance
at your local reputable steel vendor (ie British Alloy Steels etc).

Doug