THERMAL-DIFFUSIVITY AND THERMAL-CONDUCTIVITY OF CHROMEL, ALUMEL, AND CONSTANTAN IN THE RANGE 100-450-K

Data are presented for the thermal diffusivity and the thermal conductivity of commercially available Chromel, Alumel, and Constantan alloys, and the specific heat capacity of Alumel, over the temperature range 100 to 450 K. Over this range, the thermal conductivity of all materials increases by more than 50%; room-temperature values are 17,29, and 23 W m-1 K-1, respectively. The thermal conductivity data are discussed in terms of simple theory.