1.1本试验方法补充了试验方法C 201 ，并应与该程序一起使用，以确定碳或含碳耐火材料的热导率。本试验方法适用于电导率不超过200 Btu的耐火材料 · 在中/h · 英尺 2. · ° F（28.8瓦/米 · K） 。 1.2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。 1.3 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====== 碳质耐火材料的导热性是选择其传热特性所需的一种性能。用户选择碳耐火材料以提供规定的热损失和冷面温度条件，且不超过碳耐火材料的温度限制。 本试验方法确定了热电偶的放置和量热计中试样的定位。 本程序必须与试验方法C 201一起使用 需要较大的热梯度和稳态条件。结果基于平均温度。 该测试方法的数据适用于规范验收、估计热损失和表面温度以及多层耐火结构的设计。 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 supplements Test Method C 201 , and shall be used in conjunction with that procedure to determine the thermal conductivity of carbon or carbon-bearing refractories. 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). 1.2 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. 1.3 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== The thermal conductivity of carbon refractories is a property required for selecting their thermal transmission characteristics. Users select carbon refractories to provide specified conditions of heat loss and cold face temperature, without exceeding the temperature limitation of the carbon refractory. This test method establishes placement of thermocouples and positioning of test specimens in the calorimeter. This procedure must be used with Test Method C 201 and requires a large thermal gradient and steady state conditions. The results are based upon a mean temperature. The data from this test method is suitable for specification acceptance, estimating heat loss and surface temperature, and the design of multi-layer refractory construction. The use of these data requires consideration of the actual application environment and conditions.