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Turns out titantium has relatively poor thermal conductivity.


Some numbers from wolframalpha:


Titanium 20.48 W/mK

Steel 46.6 W/mK

Iron 80 W/mK

Nickel 91 W/mK

Aluminum 235 W/mK

Gold 320 W/Mk

Copper 400 W/mK

Silver 430 W/mK


Silver isn't that expensive if it was a better metal than copper. An ounce is 20 something and you wouldn't need that much. Not sure what sort of machining would be required, its plausible you could buy it in sheets, cut out disks and just scratch the hell out of them.


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