1.1 本试验方法包括评估抑制矿物油，特别是蒸汽轮机油的能力，以帮助防止水与油混合时铁质零件生锈。此测试方法也用于测试其他油，如液压油和循环油。程序中规定了测试重于水的流体。 注1: 对于合成流体，如磷酸酯类，塑料支架和烧杯盖应由适用于测试流体类型的耐化学性材料制成。 1.2 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 有关具体的警告语句，请参阅 7.4 – 7.6 . 1.4 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 在许多情况下，例如在蒸汽轮机的齿轮中，水可能与润滑剂混合，并可能导致铁质零件生锈。该测试表明了抑制矿物油在防止此类锈蚀方面的作用。该测试方法也用于测试液压油和循环油，包括比水重的流体。它用于新油的规格和监测- 机油。 注3: 该试验方法被用作试验方法的基础 D3603 .试验方法 D3603 用于在单独的水平和垂直测试棒表面上测试油，并可以提供更具辨别力的评估。

1.1 This test method covers the evaluation of the ability of inhibited mineral oils, particularly steam-turbine oils, to aid in preventing the rusting of ferrous parts should water become mixed with the oil. This test method is also used for testing other oils, such as hydraulic oils and circulating oils. Provision is made in the procedure for testing heavier-than-water fluids. Note 1: For synthetic fluids, such as phosphate ester types, the plastic holder and beaker cover should be made of chemically resistant material suitable for the type of fluid tested. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see 7.4 – 7.6 . 1.4 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 In many instances, such as in the gears of a steam turbine, water can become mixed with the lubricant, and rusting of ferrous parts can occur. This test indicates how well inhibited mineral oils aid in preventing this type of rusting. This test method is also used for testing hydraulic and circulating oils, including heavier-than-water fluids. It is used for specification of new oils and monitoring of in-service oils. Note 3: This test method was used as a basis for Test Method D3603 . Test Method D3603 is used to test the oil on separate horizontal and vertical test rod surfaces, and can provide a more discriminating evaluation.