1.1 本试验方法是对试验方法的补充 C201 ，并应与该试验方法一起使用，以测定未燃烧整体耐火材料的导热性。 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、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 3.1 单片耐火材料的导热系数是选择其传热特性所需的一个属性。用户选择单片耐火材料以提供指定的热损失和冷面温度条件，且不超过单片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。 3.2 本程序必须与试验方法一起使用 C201 并且需要较大的热梯度和稳态条件。结果基于平均温度。 3.3 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。 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 supplements Test Method C201 , and shall be used in conjunction with that test method for determining the thermal conductivity of unfired monolithic refractories. 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, 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. ====== Significance And Use ====== 3.1 The thermal conductivity of monolithic refractories is a property required for selecting their thermal transmission characteristics. Users select monolithic refractories to provide specified conditions of heat loss and cold face temperature, without exceeding the temperature limitation of the monolithic refractory. This test method establishes placement of thermocouples and positioning of test specimens in the calorimeter. 3.2 This procedure must be used with Test Method C201 and 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, estimating heat loss and surface temperature, and the design of multi-layer refractory construction. 3.4 The use of these data requires consideration of the actual application environment and conditions.