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thermal conductivity
(redirected from Heat conductivity)

   Also found in: Wikipedia 0.06 sec.

thermal conductivity

Ability of a substance to conduct heat. Good thermal conductors, like good electrical conductors, are generally materials with many free electrons, such as metals. A poor conductor, called an insulator, has low conductivity.

Thermal conductivity is expressed in units of joules per second per metre per kelvin (J s−1 m−1 K−1). For a block of material of cross-sectional area a and length l, with temperatures T1 and T2 at its end faces, the thermal conductivity λ equals Hl/at(T 2T1), where H is the amount of heat transferred in time t.



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? Mentioned in ? References in periodicals archive
 
A new three-aperture tip made from a special wear-resistant molybdenum alloy reportedly provides good heat conductivity.
Mold pre-heaters for tire curing presses reduce press downtime after mold changing, provide good heat conductivity, feature a standard design for passenger and light truck molds, and offer molds that are independently inserted and removed, according to the company.
Aside from ideal heat conductivity, the forged steel also has excellent strength and shape stability.
 
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