Non-electrical conductive material for extreme P&T

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Discussion Overview

The discussion centers around the search for a non-electrical conductive material that can withstand extreme conditions, specifically with a yield strength of around 1100 MPa at approximately 200°C. The context includes considerations of material properties, sourcing, and potential redesigns for housing applications.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant seeks a non-electrical conductive material with specific mechanical properties for extreme conditions.
  • Some participants question the definition of "non-electrical conductive," suggesting the need for clarification on whether thermal conductivity is also a factor.
  • Another participant proposes aluminum oxide ceramic as a potential material, noting its compressive strength and temperature resistance, but points out its lower flexural strength.
  • Concerns are raised about the necessity of such high strength for a housing material, questioning the requirement for strength beyond that of high tensile steels.

Areas of Agreement / Disagreement

Participants express differing views on the requirements for the material, particularly regarding electrical insulation versus thermal conductivity, and there is no consensus on the necessity of the specified strength.

Contextual Notes

Participants have not fully clarified the implications of "non-electrical conductive" in relation to thermal properties, and the discussion includes assumptions about material sourcing and redesign needs.

Buchimuer
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Hello!

I'm building a thing that needs to survive in extreme conditions.
So I'm looking for a non-electrical conductive material that has a yield strength around 1100 MPa at temperature around 200 C.

As long as the material is available on the market, cost will not be a problem.
 
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Buchimuer said:
for a non-electrical conductive material that have
We really do need to have you very carefully parse this expression for meaning.
 
Bystander said:
We really do need to have you very carefully parse this expression for meaning.
Edited. Sorry for my english
 
Is the material "an insulator?" Is it not?
 
Buchimuer said:
for a non-electrical conductive material
You want it to be electrically nonconductive?

Or, maybe you want it to conduct heat but not conduct electricity?
 
Bystander said:
Is the material "an insulator?" Is it not?

Sorry for the late reply, it has not to be an insulator. It is more like a housing.
 
NascentOxygen said:
You want it to be electrically nonconductive?

Or, maybe you want it to conduct heat but not conduct electricity?

Thanks for the reply. I just want it to be electrically non-conductive. I just need a material that is stable at these temperature.
 
Aluminum oxide ceramic has the compressive strength and temperature resistance you want. It's flexural strength is only around 330 MPa, though.

I think you may want to redesign your housing to use something easier to source.
 
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Why do you need a material that would have to be stronger than most high tensile steels just for a housing ?
 

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