Re: [CAD_CAM_EDM_DRO] Re: Metal selection 101

Jon Anderson wrote:

> dave engvall wrote:
>
> > BTW - be careful about high sulfur steels (free
> > machining stuff) if you intend to heat-treat.
>
> 1117 is a fairly free machining steel that can be carburized.
> I'm machining a couple hundred pounds of it right now. EMJ was
> the source, and it had to ship from back east, it's not something
> commonly used much out here. The area rep stopped by the day the
> material showed up, and he wanted to know what I was doing with it,
> saying he didn't sell much of it any more.
>
> Jon

Indeed a lot of the free machining stuff does get carburized....and seems to work OK.
High P and S tend to form inclusions that are the nuclei for fractures. Of course if one needs high levels of performance then he
probably used a better alloy. :-)

Dave