ASTM E1530-11(2016)

1.1 This test method covers a steady-state technique for the determination of the resistance to thermal transmission (thermal resistance) of materials of thicknesses less than 25 mm. For homogeneous opaque solid specimens of a representative thickness, thermal conductivity can be determined (see Note 1). This test method is useful for specimens having a thermal resistance in the range from 10 to 400 × 10^-4 m ²·K·W^-1, which can be obtained from materials of thermal conductivity in the approximate range from 0.1 to 30 W·m^-1·K^-1 over the approximate temperature range from 150 to 600 K. It can be used outside these ranges with reduced accuracy for thicker specimens and for thermal conductivity values up to 60 W·m^-1·K ^-1.