--- In [email protected], "chro.matic" <[EMAIL PROTECTED]>
wrote:
>
> badass wrote:
> I have been a mechanical engineer for about 30 years now and I can
tell you that a 316 grade of stainless steel is approved for all
types of medical implants. All 300 series of stainless are none
magnetic. You need to get into the 400 series to have them magnetic
and they resist rust but contain iron and will rust. This series
can be heat treated and is used when great strength is needed one
example is scale parts for trucks might be made from 400 series
stainless steel. The3 medical industry used 300 series practically
316 for the last 50 years. Some people however can be allergic to
stainless steel. Now days you will find a lot of implants made from
titanium it has a cost of about 4 times that of stainless and a
strength factor of double stainless. Also it weighs � that of
stainless. I am sorry for this but I felt people were being headed
down an incorrect path.
Bruce
> >
> >
> > Bear in mind that cadmium plating
> > is used on many common day ferrous
> > metal objects you might be inclined
> > to use to fabricate electrodes, and
> > it's toxic.
> >
> > An easy test is to check a suspect
> > silver colored object with a
> > magnet. If it's attracted by the magnet,
> > chuck it as a toy idea, ie. a paper clip
> > would be bad.
> >
> > Go for stainless steel, as in, what could
> > you do with a wired-up butter knife with
> > a rubber hose slipped over all but the
> > end inch of the handle? (add butter?)
>
> Unfortunately, stainless steel is attracted by magnet, too :-)
> As anything containing iron metal.
>
> Stainless steel contain nickel, and chrome, wich are toxic, too.
>
> Then, I hate eating with usual food fork and knife, or when
someone let
> these tools in an acidic sausage :-)
>
> Conductive plastic may be safe. (polymer with carbon particules ?)
>
> Good luck everybody :-)
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