1.1 本规程涵盖了通过材料或系统定量测量热传递量的方法。 1.2 本规程类似于热流量计系统的试验方法 C518型 ，但进行了修改，以适应热导率较高的小试样。 1.3 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 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、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（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====== 5.1 本规程旨在比较受控条件下的相关材料及其保持最小热导率的能力。为了预测特定应用中的传热性能，测试结果应与现场结果相关联。 5.2 经用户和生产商同意，本规程可作为常规试验。

1.1 This practice covers a means of measuring the amount of heat transfer quantitatively through a material or system. 1.2 This practice is similar to the Heat Flow Meter System of Test Method C518 , but modified to accommodate small test samples of higher thermal conductance. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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 ====== 5.1 This practice is designed to compare related materials under controlled conditions and their ability to maintain a minimum amount of thermal conductance. Test results should be correlated with field results in order to predict heat transfer properties in particular applications. 5.2 This practice may be used as a routine test when agreed upon by the user and the producer.