1.1 该试验方法包括评估航空涡轮燃料在摩擦钢表面上的边界润滑特性的磨损方面。 1.1.1 该测试方法包含两个程序，一个使用半自动仪器，另一个使用全自动仪器。可以使用这两种仪器中的任何一种进行测试。 1.2 以国际单位制表示的数值应视为标准。本标准中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。 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 由于过度摩擦导致发动机部件（如燃油泵和燃油控制装置）寿命缩短而导致的磨损有时被归因于航空燃油缺乏润滑性。 5.2 对于一些燃料/硬件组合，边界润滑是部件运行中的一个因素，已经证明了测试结果与航空燃料系统部件因磨损而损坏的关系。 5.3 气缸上滚珠润滑性评估器（BOCLE）测试中产生的磨损疤痕对流体和测试材料的污染、大气中是否存在氧气和水以及测试温度都很敏感。润滑性测量对取样和储存过程中获得的微量材料也很敏感。规程中规定的容器 D4306 应使用。 5.4 BOCLE测试方法可能无法直接反映发动机硬件的运行状况。 例如，一些含有高含量某些含硫化合物的燃料可能会产生异常的测试结果。

1.1 This test method covers assessment of the wear aspects of the boundary lubrication properties of aviation turbine fuels on rubbing steel surfaces. 1.1.1 This test method incorporates two procedures, one using a semi-automated instrument and the second a fully automated instrument. Either of the two instruments may be used to carry out the test. 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 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. 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 Wear due to excessive friction resulting in shortened life of engine components such as fuel pumps and fuel controls has sometimes been ascribed to lack of lubricity in an aviation fuel. 5.2 The relationship of test results to aviation fuel system component distress due to wear has been demonstrated for some fuel/hardware combinations where boundary lubrication is a factor in the operation of the component. 5.3 The wear scar generated in the ball-on-cylinder lubricity evaluator (BOCLE) test is sensitive to contamination of the fluids and test materials, the presence of oxygen and water in the atmosphere, and the temperature of the test. Lubricity measurements are also sensitive to trace materials acquired during sampling and storage. Containers specified in Practice D4306 shall be used. 5.4 The BOCLE test method may not directly reflect operating conditions of engine hardware. For example, some fuels that contain a high content of certain sulfur compounds can give anomalous test results.