1.1 本试验方法涵盖了评估石油基液压油以及蒸汽和燃气轮机用油的氧化稳定性的程序。 1.2 本试验方法旨在评估石油基液压油以及蒸汽和燃气轮机用油的氧化稳定性。 1.2.1 使用ISO 32-68粘度的防锈和抗氧化液压油、抗磨液压油和涡轮机油来制定精度声明。该试验方法已用于评估由合成基础油和在用油制成的流体的氧化稳定性；然而，这些流体尚未用于合作测试以开发精确数据。 1.3 以国际单位制表示的值应被视为标准值。 1.3.1 例外情况-- 括号中给出的值仅供参考。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 已识别的危险化学品列于 7.3 , 7.6 ，以及 7.8 在使用本试验方法之前，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》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 5.1 由于氧化或热分解，液压油和透平油的降解会导致酸或不溶性固体的形成，使油不适合进一步使用。 5.2 该试验方法可用于估算石油的相对氧化稳定性- 基础油。应该认识到，该测试结果与使用中的氧化稳定性之间的相关性可能因使用条件和各种油而异。

1.1 This test method covers a procedure for evaluating the oxidation stability of petroleum base hydraulic oils and oils for steam and gas turbines. 1.2 This test method was developed to evaluate the oxidation stability of petroleum base hydraulic oils and oils for steam and gas turbines. 1.2.1 Rust and oxidation inhibited hydraulic, anti-wear hydraulic and turbine oils of ISO 32–68 viscosity were used to develop the precision statement. This test method has been used to evaluate the oxidation stability of fluids made with synthetic basestock and in-service oils; however, these fluids have not been used in cooperative testing to develop precision data. 1.3 The values stated in SI units are to be regarded as standard. 1.3.1 Exception— 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. Identified hazardous chemicals are listed in 7.3 , 7.6 , and 7.8 . 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 hydraulic fluids and turbine oils, because of oxidation or thermal breakdown, can result in the formation of acids or insoluble solids and render the oil unfit for further use. 5.2 This test method can be used to estimate the relative oxidation stability of petroleum-base oils. It should be recognized that correlation between results of this test and the oxidation stability in use can vary markedly with service conditions and with various oils.