1.1 本试验方法包括在高温下，在氧气、水、铜和铁金属存在的情况下，评估抑制汽轮机油的氧化稳定性。本试验方法的最大试验时间为10 000 h、 本试验方法也用于测试其他油，例如比重低于水且含有防锈剂和氧化抑制剂的液压油和循环油。 1.2 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。 1.2.1 例外情况- 图中括号内的数值用于提供使用基于非国际单位制的旧设备的信息。 1.3 警告 -许多监管机构已将汞指定为一种危险物质，可导致严重的医疗问题。汞或其蒸汽已被证明对健康有害，并对材料具有腐蚀性。处理汞和含汞产品时要小心。有关更多信息，请参阅适用的产品安全数据表（SDS）。销售汞或汞- 当地或国家法律禁止含有产品或两者。用户必须确定其所在地销售的合法性。 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。 有关具体的警告声明，请参阅第节 7. . 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 该试验方法广泛用于规范目的，并被认为在估计润滑剂的氧化稳定性方面有价值，尤其是那些容易受到水污染的润滑剂。然而，应认识到，该方法的结果与现场使用中润滑剂的氧化稳定性之间的相关性可能因现场使用条件和各种润滑剂而显著不同。该方法的精度声明是在汽轮机油上确定的。 注1: 此外，在用这种方法测试润滑剂的过程中，可能会出现其他劣化迹象，如污泥形成或催化剂盘管腐蚀，这些迹象在计算的氧化寿命中没有反映出来。 负责该方法的小组委员会正在研究使用该试验装置评估润滑剂的替代标准的应用。试验方法 D4310 现在可用于污泥测量。

1.1 This test method covers the evaluation of the oxidation stability of inhibited steam-turbine oils in the presence of oxygen, water, and copper and iron metals at an elevated temperature. This test method is limited to a maximum testing time of 10 000 h. This test method is also used for testing other oils, such as hydraulic oils and circulating oils having a specific gravity less than that of water and containing rust and oxidation inhibitors. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.2.1 Exception— The values in parentheses in the figures are provided for information for those using old equipment based on non-SI units. 1.3 WARNING —Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use Caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location. 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. For specific warning statements, see Section 7 . 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 test method is widely used for specification purposes and is considered of value in estimating the oxidation stability of lubricants, especially those that are prone to water contamination. It should be recognized, however, that correlation between results of this method and the oxidation stability of a lubricant in field service may vary markedly with field service conditions and with various lubricants. The precision statement for this method was determined on steam turbine oils. Note 1: Furthermore, in the course of testing a lubricant by this method, other signs of deterioration, such as sludge formation or catalyst coil corrosion, may appear that are not reflected in the calculated oxidation lifetime. The subcommittee responsible for this method is investigating the application of alternative criteria for evaluation of lubricants using this test apparatus. Test Method D4310 is now available for sludge measurement.