1.1 本试验方法包括用于评价流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、酸性使用条件下评估汽车发动机油。 1.2 以SI单位表示的值将被视为标准值。SI单位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- 在没有直接等价物的情况下，如螺纹、国家管螺纹/直径和管道尺寸的单位。 1.3 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。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法规限制的适用性。看 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》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 5.1 该台架试验方法旨在替代试验方法 D5844 .试验方法 D5844 旨在测量发动机油在低温、短途使用下保护气门机构部件免受生锈或腐蚀的能力，并与1978年之前此类使用的车辆相关联。 5.1.1 对于大多数（但不是全部）评估的测试油，这两种测试方法之间的相关性已得到证实。

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. 5.1.1 Correlation between these two test methods has been demonstrated for most, but not all, of the test oils evaluated.