This paper describes the thermal conductivity of steel determined by the following processes :
(a) To investigate the diffusivity, specific weight and specific heat of steel and determine thermal conductivity of steel with above results.
(b) To determine the thermal conductivity of steel by a apparatus devised by the authors
The value for the thermal conductivity of steel at about 100°C. is concluded to be 0.158 cal./cm.°C. sec. The thermal conductivity at temperatures between 20° and 400°C. is also determined.