ASTM E2584-20 PDF

1.1 This practice describes a technique for the determination of the apparent thermal conductivity, λa, and thermal diffusivity, αa, of materials. It is for solid materials with apparent thermal conductivities in the approximate range 0.02 < λa < 20 W/(m·K) over the approximate temperature range between 300 K and 1100 K, if used stainless steel 304 slag calorimeter and K thermocouples, and up to 1600 K, if used Alumina slag calorimeter and PtRh thermocouples.

Note 1: While the practice should also be applicable to determining the thermal conductivity and thermal diffusivity of non-reactive materials, it has been found specifically useful in testing fire resistive materials that are both reactive and undergo significant dimensional changes during a high temperature exposure.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.