 | | From: | Marian | | Subject: | Magnetic permeability of steel vs. pressure and temperature | | Date: | 12 Jan 2005 08:35:50 -0800 |
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 | I am looking for pressure (up to 30 kpsi) and temperature (up to 300
degC) characteristics of the magnetic permeability of AISI 410 SS or
similar magnetic materials. Frequencies 10-100 kHz (but would
appreciate data in any frequency range).
Are there materials that would maintain the high permeability better
under these conditions?
Regards,
Marian
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| | From: | mark_tarka at yahoo.com | | Subject: | Re: Magnetic permeability of steel vs. pressure and temperature | | Date: | 13 Jan 2005 06:16:41 -0800 |
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Marian wrote:
Nice question, Marion.
> I am looking for pressure (up to 30 kpsi) and temperature (up to 300
> degC) characteristics of the magnetic permeability of AISI 410 SS or
> similar magnetic materials. Frequencies 10-100 kHz (but would
> appreciate data in any frequency range).
I haven't a clue, but many physical properties
of materials change with changes in P and/or T.
>
> Are there materials that would maintain the high permeability better
> under these conditions?
Your best bets might be to check government
lab publications and the USPTO, and the ACS
databases if you have access.
...Mark (Not only do I become more beautiful as P and T go up, but ....)
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| | From: | Mike D | | Subject: | Re: Magnetic permeability of steel vs. pressure and temperature | | Date: | 13 Jan 2005 15:30:17 -0800 |
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Marian wrote:
> I am looking for pressure (up to 30 kpsi) and temperature (up to 300
> degC) characteristics of the magnetic permeability of AISI 410 SS or
> similar magnetic materials. Frequencies 10-100 kHz (but would
> appreciate data in any frequency range).
>
>
> Are there materials that would maintain the high permeability better
> under these conditions?
>
> Regards,
> Marian
Hello Marian,
Jiles' group measured the stress effects on that grade of stainless
steel. Here is the reference:
IEEE Mag Trans, Sept. 2002, p. 2418 (Note that C.C.H. Lo is the primary
author)
I realize that the paper deals with uniaxial stress and not triaxial
pressure, but you might still find it useful.
I haven't had any luck finding the temperature data. You might want to
extrapolate the frequency response from similar materials.
Regarding your question about materials that would maintain the high
permeability better: Is the material going to experience a harsh
environment? Materials with better permeability will likely not have
as good corrosion properties.
Hope this helps,
Mike D
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