1.1本试验方法包括在模拟热表面应用条件下测定隔热材料的砌块和管道形式的商业尺寸的性能。术语“热表面性能”是指模拟使用温度测试，其中加热的测试表面处于水平位置。 1.2本试验方法主要指适用于热侧温度超过200°F（93°C）的高温绝缘。通过适当的实验室制备样品，它可用于预成型绝缘材料、绝缘水泥、毯子等材料。 1.3以英寸-磅为单位的数值应视为标准值。括号中给出的值仅供参考。 1.4本标准无意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。

1.1 This test method covers the determination of the performance of commercial sizes of both block and pipe forms of thermal insulating materials when exposed to simulated hot-surface application conditions. The term "hot-surface performance" has reference to a simulated use-temperature test in which the heated testing surface is in a horizontal position. 1.2 This test method refers primarily to high-temperature insulations that are applicable to hot-side temperatures in excess of 200°F (93°C). It may be used for materials such as preformed insulations, insulating cements, blankets, etc., by proper laboratory preparation of the samples. 1.3 The values stated in inch-pound 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 and health practices and determine the applicability of regulatory limitations prior to use.