1.1 本试验方法包括在标准化试验条件下测定耐火材料的相对导热系数。本试验方法适用于电导率系数不超过200 Btu·in的耐火材料/h·ft 2. ·对于1英寸（25毫米）的厚度，温度为°F（28.8 W/m·K）。 1.2 在测试特定类型的耐火材料时，与本程序结合使用的详细ASTM测试方法如下: C182 ，试验方法 C202 ，试验方法 C417 和测试方法 C767 . 1.3 以英寸为单位的值- 磅单位应被视为标准单位。括号中给出的值是对国际单位制的数学转换，仅供参考，不被视为标准值。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 3.1 耐火材料的导热系数是选择其传热特性所需的特性。用户选择耐火材料以提供指定的热损失和冷面温度条件，而不超过耐火材料的温度限制。本试验方法建立了使用量热计测试耐火材料导热系数的方法。 3.2 该程序需要较大的热梯度和稳态条件。结果基于平均温度。 3.3 该试验方法的数据适用于多层耐火材料结构的规范验收和设计。 3.4 使用这些数据需要考虑实际的应用环境和条件。

1.1 This test method covers the determination of the comparative thermal conductivity of refractories under standardized conditions of testing. This test method is designed for refractories having a conductivity factor of not more than 200 Btu·in./h·ft 2 ·°F (28.8 W/m·K), for a thickness of 1 in. (25 mm). 1.2 Detailed ASTM test methods to be used in conjunction with this procedure in testing specific types of refractory materials are as follows: Test Method C182 , Test Method C202 , Test Method C417 , and Test Method C767 . 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 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. 1.5 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. ====== Significance And Use ====== 3.1 The thermal conductivity of refractories is a property required for selecting their thermal transmission characteristics. Users select refractories to provide specified conditions of heat loss and cold face temperature, without exceeding the temperature limitation of the refractory. This test method establishes the testing for thermal conductivity of refractories using the calorimeter. 3.2 This procedure requires a large thermal gradient and steady-state conditions. The results are based upon a mean temperature. 3.3 The data from this test method are suitable for specification acceptance and design of multi-layer refractory construction. 3.4 The use of these data requires consideration of the actual application environment and conditions.