Physics, asked by SANAALI5983, 1 year ago

Which material has lowest thermal conductivity?

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Answered by zinuu1
0
tWithin the metals and alloys with a structural significance, and without considering composites or metal foams, Titanium Alloys have the lowest conductivity, at ~7 W/mK. For comparison, 310 Stainless Steel has ~14W/mK and Copper ~390 W/mK.

Titanium alloys are used in all those instances in which you need a strong material, low thermal conductance and have no cost issues. An example are isostatic mounts for high quality optical instruments.

Alternatively, alloys of Nickel have conductivities in the order of 8–10 W/mK

Beside metals with structural uses, some rare earths have a very low conductivity, such Selenium and Tellurium, with conductivities in the 1.3–4.5 range.

Hope it helpssssss
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