1.1 本试验方法涵盖了在空气、铜和铁金属存在的情况下评估抑制润滑剂氧化的程序。 1.2 开发了该试验方法，用于评估蒸汽和燃气轮机油的高温氧化稳定性和沉积物形成趋势。它已用于测试用矿物油和合成基础油制成的其他润滑剂，用于压缩机、液压泵和其他应用，但尚未用于合作测试。 1.3 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 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。 第节列出了已识别的危险化学品 7. . 在使用本测试方法之前，请参阅供应商的安全标签、材料安全数据表和其他技术文献。 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 流体润滑剂因氧化或热分解而降解可能导致流体增厚或形成酸或不溶性固体，并使流体不适合进一步用作润滑剂。 5.2 本试验方法可用于评估油的氧化稳定性。它可以作为配方筛选工具、规范要求、质量控制测量或估计剩余使用寿命的手段。然而，应认识到，本试验方法的结果与现场使用的油的氧化稳定性之间的相关性可能因现场使用条件和各种油而显著不同。 5.3 本试验方法旨在补充试验方法 D5846 用于评估在135的合理时间内不会显著降解的液体 °C。

1.1 This test method covers a procedure for evaluating the oxidation of inhibited lubricants in the presence of air, copper, and iron metals. 1.2 This test method was developed and is used to evaluate the high temperature oxidation stability and deposit forming tendency of oils for steam and gas turbines. It has been used for testing other lubricants made with mineral oil and synthetic basestocks for compressors, hydraulic pumps, and other applications, but these have not been used in cooperative testing. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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. Identified hazardous chemicals are listed in Section 7 . Before using this test method, refer to suppliers' safety labels, Material Safety Data Sheets and other technical literature. 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 Degradation of fluid lubricants because of oxidation or thermal breakdown can result in fluid thickening or in the formation of acids or insoluble solids and render the fluid unfit for further use as a lubricant. 5.2 This test method can be used for estimating the oxidation stability of oils. It can function as a formulation screening tool, specification requirement, quality control measurement, or as a means of estimating remaining service life. It shall be recognized, however, that correlation between results of this test method and the oxidation stability of an oil in field service can vary markedly with field service conditions and with various oils. 5.3 This test method is designed to compliment Test Method D5846 and is intended for evaluation of fluids which do not degrade significantly within a reasonable period of time at 135 °C.