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Permeance, in general, is the degree to which a material admits a flow of matter or energy.


In Electromagnetic theory, permeance is the inverse of reluctance. Its SI derived unit is the henry (the same as the unit of inductance, although the two concepts are distinct).

Materials science

In Materials science, permeance is the degree to which a material transmits another substance.

External articles and references

  • Properties of Magnetic Materials (units of magnetic permeance)
Material science
  • Bombaru, D., Jutras, R., and Patenaude, A., "Air Permeance of Building Materials". Summary report prepared by, AIR-INS Inc. for Canada Mortgage and Housing Corporation, Ottawa, 1988.
  • Don Mills, "The Details of Air Barrier Systems for Houses". Ontario New Home Warranty Program, 1993.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Permeance". A list of authors is available in Wikipedia.
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