1.1 本试验方法描述了定量测定润滑剂和润滑脂中亚铁碎屑浓度的方法。 1.2 本试验方法测定了润滑剂或润滑脂中亚铁碎屑的浓度，其标称值为0 mg/kg至10 mg/kg 000 mg/kg（质量百分比1%）或更大。 1.3 本试验方法适用于从机械和其他机械设备中取样的所有类型的润滑液（API I-V组）和润滑脂，包括往复式发动机机油、涡轮机油、液压油、齿轮油和轴承润滑脂。 1.4 本试验方法描述了将润滑剂或润滑脂样品放置在磁强计装置中的方法，该装置可确定铁碎屑的浓度，并将这些读数直接提供给操作员，无需进一步计算。 1.5 本试验方法适用于处于任何降解阶段的在用润滑剂和润滑脂。 1.6 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。 1.7 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和健康实践，并确定监管限制的适用性。 1.8 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 通过量化总含铁碎屑的浓度，该测试方法通过使用户能够准确定位机器脱落的含铁碎屑的正常堆积存在偏差或含铁碎屑的浓度超过安全操作极限，提供了机械磨损的直接指示。 有关此类程序的具体指南可在指南中找到 D7669 , D7720 和 D7874 . 5.2 该试验方法可在现场进行，并可用作粒径不敏感的最小样品制备方法，以替代实验室通过铁谱法对由于存在磨屑而导致的异常机械条件进行的筛选，如实践中所述 D7690 或测试方法中描述的元素分析方法，如原子发射光谱法 D5185 和 D6595 .

1.1 This test method describes a means for quantitative determination of the concentration of ferrous debris in lubricants and greases. 1.2 This test method provides a determination of the concentration of ferrous debris in the lubricant or grease from a nominal 0 mg/kg to 10 000 mg/kg (1 % by mass) or greater. 1.3 This test method is applicable to all types of lubricating fluids (API Group I-V) and greases sampled from machinery and other mechanical equipment, including reciprocating engine oils, turbine oils, hydraulic oils, gear oils, and bearing greases. 1.4 This test method describes a means by which a sample of lubricant or grease is placed in a magnetometer apparatus, which determines the concentration of ferrous debris and provides these readings directly to the operator without further calculation. 1.5 This test method is applicable to in-service lubricants and greases at any stage of degradation. 1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.7 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 and health practices and determine the applicability of regulatory limitations prior to use. 1.8 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 By quantifying the concentration of total ferrous debris, this test method provides a direct indication of wear in the machinery by enabling the user to pinpoint when there is a deviation from the normal buildup of ferrous debris shed by the machinery or when the concentration of ferrous debris has exceeded safe operating limits. Specific guidance regarding such procedures may be found in Guides D7669 , D7720 , and D7874 . 5.2 This test method can be performed on-site and can be utilized as a particle-size insensitive, minimum sample preparation alternative to laboratory-based screening for abnormal machinery conditions due to the presence of wear debris by means of ferrography as described in Practice D7690 , or elemental analysis methods such as atomic emission spectrometry, described in Test Methods D5185 and D6595 .