Standard Test Method for Thermal Conductivity of Refractories by Hot Wire (Platinum Resistance Thermometer Technique)

1.1 This test method covers the determination of the thermal conductivity of non-carbonaceous, dielectric refractories.

1.2 Applicable refractories include refractory brick, refractory castables, plastic refractories, ramming mixes, powdered materials, granular materials, and refractory fibers.

1.3 Thermal conductivity k-values can be determined from room temperature to 1500°C, or the maximum service temperature limit of the refractory, or to the temperature at which the refractory is no longer dielectric.

1.4 This test method is applicable to refractories with k-values less than 15 W/m[dot]K (100 Btu[dot]in./h[dot]ft2[dot]°F).

1.5 In general it is difficult to make accurate measurements on anistropic materials, particularly those containing fibers, and the use of this test method for such materials should be agreed between the parties concerned.

1.6 The values stated in SI units are to be regarded as standard.

1.7 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 and health practices and determine the applicability of regulatory limitations prior to use.