**NBS Metal Property Library**

The NBS Metal Property Library provides conductivity for several metals as a function of temperature and residual resistivity ratio (RRR). The curve fits used for this library are from:

Hurst, J. G. and A. B. Lankford, *Thermal Conductivity of Aluminum, Copper, Iron, and Tungsten for temperatures ranging from 1 K to the melting point,** National Bureau of Standards, NBS 84-3007*, June 1984.

The calling protocol is:

k = Conductivity_NBS(M$, T, RRR)

where M$ is the metal

T is the temperature (in K, C, R, or F)

RRR is the residual resistivity ratio

k is conductivity (in W/m-K or Btu/hr-ft-R)

The metals available include:

M$ = 'Copper_NBS'

M$ = 'Aluminum_NBS'

M$ = 'Iron_NBS'

M$ = 'Tungsten_NBS'

Example:

$UnitSystem SI Mass J K Pa

k=Conductivity_NBS('Iron_NBS',300 [K], 100[-])

Solution: k = 78.48 [W/m-K]