1.1 本试验方法涵盖了用于评估液体润滑剂防锈能力的球锈试验（BRT）程序。该程序特别适用于在低温、酸性工作条件下评估汽车发动机机油。 1.2 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 1.2.1 例外情况- 没有直接等效物，例如螺纹单位、国家管道螺纹/直径和管道尺寸。 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、健康和环境实践，并确定监管限制的适用性。 看见 7.1.1 – 7.1.3 和 8.2.1.1 . 1.4 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 本台架试验方法旨在替代试验方法 D5844 . 试验方法 D5844 设计用于测量发动机机油在低温短行程服务下保护气门机构部件免受生锈或腐蚀的能力，并与1978年之前该类型服务中的车辆相关。 5. 5.1.1 这两种测试方法之间的相关性已被证明适用于大多数（但不是所有）评估的测试油。

1.1 This test method covers a Ball Rust Test (BRT) procedure for evaluating the anti-rust ability of fluid lubricants. The procedure is particularly suitable for the evaluation of automotive engine oils under low-temperature, acidic service conditions. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.2.1 Exceptions— Where there is no direct equivalent, such as the units for screw threads, national pipe threads/diameters, and tubing size. 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. See 7.1.1 – 7.1.3 and 8.2.1.1 . 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 This bench test method was designed as a replacement for Test Method D5844 . Test Method D5844 was designed to measure the ability of an engine oil to protect valve train components against rusting or corrosion under low temperature, short-trip service, and was correlated with vehicles in that type of service prior to 1978. 5 5.1.1 Correlation between these two test methods has been demonstrated for most, but not all, of the test oils evaluated.