1.1 本试验方法涵盖了测定自由流动和非自由流动金属粉末、润滑金属粉末混合物和粉末化合物的表观密度的定量实验室程序。 1.2 单位- 除质量、体积和密度值外，使用克和立方厘米单位是长期的行业惯例，以英寸-磅单位表示的值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 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。 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 表观密度是衡量粉末材料特性的重要指标，有助于粉末生产商和粉末用户确定质量和批间一致性。 5.2 本试验方法适用于自由流动和非自由流动的金属粉末、润滑粉末混合物和金属化合物。 5.3 与在受控试验条件下在实验室进行的测量值相比，在自动压实过程中，当数量落入模腔后沉淀时，润滑金属粉末混合物的表观密度可能不同。 5.4 该试验方法模拟了进料靴在粉末压实机上的作用，并给出了一个表观密度值，该值与生产填充操作后模腔内粉末的表观密度非常接近。 5.5 了解最终润滑生产粉末混合物的表观密度值对于粉末冶金（PM）零件制造商设置固定填充模腔模具的压缩比非常有帮助。 5.6 用本试验方法在金属粉末上获得的表观密度值约为0.2 g/cm 3. 高于使用霍尔漏斗测试方法获得的值 B212页 ，卡尼漏斗，试验方法 B417页 ; 或斯科特容量计，测试方法 B329 . 5.7 该测试方法可能是粉末制造商和粉末冶金零件制造商之间采购协议的一部分，也可能是任何一方的内部质量控制测试。

1.1 This test method covers a quantitative laboratory procedure for determining the apparent density of both free-flowing and non-free-flowing metal powders, lubricated metal powder mixtures, and powder compounds. 1.2 Units— With the exception of the values for mass, volume, and density, for which the use of the gram and the cubic centimetre units is the long-standing industry practice, the values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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. 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 The apparent density is an important measure of a material characteristic of the powder that is useful to the powder producers and powder users in determining quality and lot to lot consistency. 5.2 This test method is applicable to free-flowing and non-free-flowing metal powders, lubricated powder mixtures and metal compounds. 5.3 The apparent density of a lubricated metal powder mixture may be different when a quantity settles after falling into the die cavity during automated compacting compared with the value obtained from a measurement taken in the laboratory under controlled test conditions. 5.4 This test method simulates the action of the feed shoe on a powder compacting press and gives an apparent density value that closely approximates the apparent density of the powder in the die cavity after the production filling operation. 5.5 Knowledge of this apparent density value for the final lubricated production powder mixture is very helpful to the powder metallurgy (PM) parts fabricator to set the compression ratios for fixed fill die cavity tooling. 5.6 The values of apparent density obtained on metal powders with this test method are approximately 0.2 g/cm 3 higher than those obtained using the Hall Funnel, Test Method B212 , the Carney Funnel, Test Method B417 ; or the Scott Volumeter, Test Method B329 . 5.7 This test method may be part of a purchase agreement between the powder producer and PM parts producer, or it may be an internal quality control test for either party.