1.1本试验方法包括在标准试验条件下测定耐火材料的比较导热系数。本试验方法适用于电导率不超过200 Btu·in的耐火材料/高·英尺 2. ·°F（2818 W/m·K），厚度为1英寸。（25毫米）。 1.2在测试特定类型的耐火材料时，结合本程序使用的详细ASTM测试方法如下:测试方法C182、测试方法C202、测试方法C417和测试方法C767。 1.3以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 3.1耐火材料的导热性是选择其传热特性所需的一种性能。用户选择耐火材料以提供规定的热损失和冷面温度条件，且不超过耐火材料的温度限制。本试验方法确定了使用热量计测试耐火材料的导热性。 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本试验方法的数据适用于规范验收和多层耐火结构的设计。 3.4使用这些数据需要考虑实际应用环境和条件。

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 (2818 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== 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.