What materials allow a magnetic flux at very high (1000 C) temps ?

[MeTwo]

What materials allow a flux to flow at temperatures in the region of 1000C ?

Which of these materials would survive in an air atmosphere at that temperature ?

Thanks

 

[MagMike]

None.

You'll need to locate a magnet external to that environment.

Did you have an application in mind or is this just a thought experiment?

 

[MeTwo]

I know about needing to locate an external magnet.

Its an application. I want to actuate a valve inside a high temperature environment.

 

[MeTwo]

Anyone ?

Does steel allow a magnetic flux above the Currie temp ?

Thanks

 

[prex]

You already got your answer:it's no.
Above the Curie temperature ferromagnetic materials become simply paramagnetic, not very different from vacuum. By the way steel would be unable to do almost anything at that temperature.

prex

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[MeTwo]

Sorry, I missed the "none" part of your reply.

Do any ceramic materials possess magnetic properties at elevated temperatures ?

Thanks

 

[MeTwo]

What is the highest temperature that steel is permeable and what kind of steel ?

Thanks

 

[EdStainless]

Look up a list of curie temperatures.
I don't recall anything above about 450C.

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Plymouth Tube

 

[IRstuff]

But, isn't the OP essentially asking whether something like steel can remain paramagnetic, and hence, still be usuable as a solenoid plunger, for example?

TTFN

FAQ731-376