1.1本试验方法包括在93至316℃之间测定润滑脂的蒸发损失 ° C（200和600 ° F） 。本试验方法旨在补充试验方法D 972 ，限制为149 ° C（300 ° F） 。 1.2以国际单位制表示的数值应视为标准。括号中的值仅供参考。 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。 有关具体安全信息，请参阅5.2。 ====意义和用途====== 润滑脂和油中挥发性物质的损失可能会对润滑剂的原始性能特性产生不利影响，因此，可能是评估特定用途润滑剂的一个重要因素。此类挥发物也可被视为润滑剂使用环境中的污染物。该测试方法的结果与服务性能之间的相关性尚未建立。 该试验方法可在93至316之间的任何规定温度下使用 ° C（200和600 ° F） 该方法的用户可能会同意。( 警告 — 该试验方法不应在超过润滑脂基础油闪点的温度下使用。） 笔记 1-规定的空气流量，2.58 ± 0.02克/分钟（标准温度和压力下为2升/分钟），假设为干燥空气。尚不清楚原始工作涉及干燥空气，但已证明这可能是再现性的一个因素，应予以解决。露点低于10的空气 ° C在标准温度和压力下即可。

1.1 This test method covers the determination of evaporation loss of lubricating greases at temperatures between 93 and 316 ° C (200 and 600 ° F). This test method is intended to augment Test Method D 972 , which is limited to 149 ° C (300 ° F). 1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 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. For specific safety information, see 5.2. ====== Significance And Use ====== The loss of volatile materials from greases and oils can adversely affect the original performance characteristics of a lubricant and, therefore, could be a significant factor in evaluating a lubricant for a specific use. Such volatiles can also be considered contaminants in the environment in which the lubricant is to be used. Correlation between results from this test method and service performance has not been established. The test method can be used at any specified temperature between 93 and 316 ° C (200 and 600 ° F) that may be agreed upon by the user of the method. ( Warning — This test method should not be used at temperatures which exceed the flash point of the base oil of the grease.) Note 1—The specified flow of air, 2.58 ± 0.02 g/min, (2 L/min at standard temperature and pressure), assumes dry air. It is not known that the original work involved dry air but it has since been shown that this can be a factor in reproducibility and should be addressed. Air with a dew point of less than 10 ° C at standard temperature and pressure will be satisfactory.