--- In [email protected], "Electroman" <[EMAIL PROTECTED]> wrote:
>
> I refer to the statement below which says."Stainless steel contain
nickel, and chrome, wich are toxic, too."
>
> The implication is that stainless steel is toxic. This is NOT so.
> All the stainless steel that I use for my electrodes (see
www.electroman.com.au ) are made from 316 medical grade. I can hardly
believe that the stainless steel used in operating theaters around the
world are toxic.
>
>
>
>
>
> badass wrote:
>
>
> > 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 ?)
After 50 years of design engineering, using many types of stainless steel:
There are many, many types, formulated for all different purposes.
Originally, the most common type was "18-8"--technically not a steel
at all, but "18-8-chrome nickel iron". It is completely non-toxic and
very corrosion resistant, but it lacks strength and hardness for some
applications, notably cutlery (and is miserable to machine). In
spite of about 74% iron,which is magnetic, and 8% nickel, which is
also magnetic, the alloy is almost free of magnetic properties. As
the formula is changed---the % of chrome and nickel changed and other
elements added--the alloy becomes more or less magnetic. Stainless
steel knives are readily stored on a magnetic holder, for
instance--whatever is added to make it keep a sharp edge makes it
magnetic.
In general, all stainless steels are stable and do not give off any
toxic materials (of course, some acids etc. do attack some s.stls and
then any constituents may be released.)
Also, although "18-8" is non-toxic, and doesn't ordinarily give off
free nickel, many people are allergic to nickel, and if they are
extremely so, perhaps they might be bothered even by 18-8. I never
heard of such a person.
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