Magnetic properties of stainless steel

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Scott Hanson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <huil888-at-surfside-dot-net>

Almost all the commonly-encountered stainless steel grades are slightly
magnetic, but you have to check very carefully. A small, powerful rare earth
magnet (ex disk drive, etc) will make it more apparent, but don't expect it
to be "magnetic" like carbon steel or soft iron is. In most cases, the
magnetic effect will be barely perceptible.

The alloy series known as austenitic stainless steels (300 series) are
magnetic. Martinsitic and ferritic SS alloys (400 series) are non-magnetic.

The magnetic properties of the alloy are also affected by "cold working".
Almost every small stainless steel coil spring will be slightly more
magnetic than the wire it was wound from because of the cold working
phenomenon.

Scott Hanson


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, August 04, 2002 12:45 PM
Subject: Re: coherers


> Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<evp-at-pacbell-dot-net>
>
> Tesla list wrote:
> >
> > Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <Gotubes-at-aol-dot-com>
> >
> > Stainless steel is NOT always magnetic. It depends on the alloy.
> >
> > Bob Niven
>
> None of the various stainless steel items and stock (sheet, bar, rod) I
> have here shows the faintest signs of being magnetic, but there must be
> some steels which are since there is frequent reference to "non magnetic
> stainless steel".  Apparently that's what Antonio has.
>
> Ed
>
>
>
> ---
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>
>

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