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Thermal Conductivity

ASTM D7984, D5334, D5930, ISO 22007-2

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What is thermal conductivity?

Thermal conductivity is at the core of TALs services offerings. We are global leaders in thermal conductivity measurements and specialize in niche testing applications across a wide range of sample types.

Formula for measuring thermal conductivity and effusivity.

Thermal conductivity is a measure of a materials ability to transfer heat most often denoted as (λ, k or K-value). Thermal conductivity differs with each substance and may depend on structure, density, humidity, pressure and temperature. Materials having a large thermal conductivity value are good conductors of heat; whereas ones with a small thermal conductivity value are poor conductors of heat (i.e. good insulators). Thermal conductivity is typically represented in units of (W/mK).

 Why is thermal conductivity important?

Thermal conductivity can generally fall into one of two main categories of importance. One being applications where temperature needs to be dissipated quickly and the other where temperature needs to be maintained. The former would be applicable to devices which are used to remove heat from sensitive componentry where a buildup of heat could otherwise cause serious damage. In this case, high thermal conductivity materials are of significant value. The latter would represent cases where minimizing heat loss plays a significant role such as cases where drastic changes in temperature can prove detrimental. Here, low conductivity materials add value.  

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    • Abbott

      I am very happy with the testing services I received from Thermal Analysis Labs. I’ve found them very responsive, and they were able to get us the data we needed to get quickly so that we could use it to validate our designs. I refer my other colleagues to them, and they’re my go-to group for thermal testing.

      Scott Kramer, PEng.,
      Principal R&D Engineer