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Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)

thread391-450329

Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)

Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)

(OP)
High all,

I need to increase thermal conductivity between Steel and Aluminum plates at +500C temps, using a thing semi-flexible sheet without gluing it to the surfaces of the metal plates.

Is there anything that can fit this problem?

Thanks,

SD

RE: Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)

Give these people a call. They're sort of the top dog in this stuff.

Bergquist

Keith Cress
kcress - http://www.flaminsystems.com

RE: Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)


the melting point of pure Al is 660C, and it readily oxidizes,

you need to consider alternatives

RE: Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)

(OP)
Excellent, thanks!

RE: Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)

(OP)
500C is worst case, actual working temp will be around 300-400, for a duration of couple of minutes.

RE: Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)

This subject has come up in the past: thread391-344083: high temperature (800C) thermally conductive compound, but flexibility at high temperatures is problematic. Otherwise, see also

http://www.thermon.co.za/catalogue/heat-trace/stea...
https://www.tedpella.com/technote_html/16057%20TN....

TTFN (ta ta for now)
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RE: Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)

Contact manufacturers of heat transfer paste.
I have used both MgO and BN for high temp heat transfer and they work fairly well.
At your temps a silicone or Krytox grease loaded with a high heat transfer filler would do the trick.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

RE: Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)

I have used 611HTC from Timtronics which is rated up to 360C with good results. At the time, this was the highest temperature rating I could find that was still a grease as opposed to a cement. https://timtronics.com/high-temperature/

RE: Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)

georgeverghese,

Interesting stuff, looks much easier to use than a thermal grease, do you know how well it handles differential thermal expansion?

RE: Thin Thermal Pad to Increase Thermal Conductivity (+500C temp)

@hendersdc

Wouldnt know details, maybe write to the supplier. All I know is that there are compact heat exchangers made out of graphite.

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