Recommendations for cheap yet stiff thermally conductive material

[Mabrouk92]

Recommendations for cheap yet stiffer material that can tolerate up to 10,000 lb, and has a high thermal conductivity?

 

[IRstuff]

Aluminum, unless you come up with a set of useful specs.

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[Mabrouk92]

Actually, I need something that is cheaper than Aluminum and may be up to half the thermal conductivity of copper.

 

[3DDave]

Best of luck -

https://en.wikipedia.org/wiki/Thermal_conductivity#/media/File:Thermal_conductivity.svg

Even half of copper has aluminum sitting at that spot all alone.

 

[EdStainless]

Diamond, Gold, Silver, Copper, Aluminum, and then it drops off drastically.
I know of nothing cheap that has any reasonable TC.
Unless you are willing to use pure iron or pure zinc I don't know where you will turn.

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

 

[IRstuff]

There are materials that aren't on that chart.
Silicon carbide >> 120
Silicon nitride >> 86-120
Alunimum nitride >> 150-220

When the physics goes against you, it's time to rethink the engineering. You've been exceedingly reticent, which is not helping you in the least.

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[EdStainless]

IR, I left them out of my list because I also know the cost of high density engineering ceramics.
Compare the TC of reaction bonded SiC to direct sintered, huge difference.

= = = = = = = = = = = = = = = = = = = =
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[IRstuff]

Wasn't really my aim; it was to get the OP to rethink his solution space

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10,000 lb of what? per what?

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

 

[SnTMan]

Cheap + stiff + thermally conductive, I'm thinking carbon steel

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

 

[btrueblood]

Or cast iron.

 

[IRstuff]

Steel and iron are a bit far from half of copper, though.

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[BrianPetersen]

Steel and iron are highly thermally conductive compared to wood, though.

Original poster needs to study the application's actual requirements.

 

[IRstuff]

Sure, but the OP specifically stated "up to half the thermal conductivity of copper," which is the ONLY specification they've even bothered to bother us with.

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The answer was obvious all along: Unobtanium.

(sorry)

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

 

[IRstuff]

And that's only twenty cents per ton ;-)

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[btrueblood]

But that's the FOB price on the surface of a neutron star...shipping costs are extra...