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# Thermal Resistivity and Conductivity

## The ability of a material to resist flow of heat.

Thermal resistance is the ability of a material to resist flow of heat. Thermal resistivity is the reciprocal of thermal conductivity and can be expressed as

r = 1 / k                                (1)

where

r = thermal resistivity (moC/W, hr ft2 oF/(Btu in))

k = thermal conductivity (W/(moC), Btu in/(hr ft2 oF))

Thermal conductivity - k - is the property of a material indicating its ability to conduct heat.

## Related Topics

• ### Thermodynamics

Work, heat and energy systems.

## Related Documents

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Online calculators, figures and tables showing thermal conductivity of liquid and gaseous butane, C4H10, at varying temperature and pressure, SI and Imperial units.
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Thermal conductivities of common metals, metallic elements aand alloys.
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Thermal conductivity coefficients for insulation materials, aluminum, asphalt, brass, copper, steel, gases and more.
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Convert between thermal conductivity units - table and diagram.
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Figures and tables showing thermal conductivity of water (liquid and gas phase) with varying temperature and pressure, SI and Imperial units.

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## Citation

• The Engineering ToolBox (2008). Thermal Resistivity and Conductivity. [online] Available at: https://www.engineeringtoolbox.com/thermal-resistivity-d_1053.html [Accessed Day Month Year].

Modify the access date according your visit.

7.25.9

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