1.1 本实验室试验方法包括测定金属粉末和金属粉末混合物的可压缩性，该可压缩性是通过在指定模具的受控条件下可将试样致密化的程度来测量的。 1.2 单位- 密度和质量值除外，其使用克每立方米（g/cm 3. )克（g）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 通过本试验获得的压缩性值是对粉末材料特性的测量。 5.2 该测试方法在研发项目中非常有用，可作为金属粉末生产评估和制造控制中的质量控制测试，以及金属粉末批次装运的验收测试。 5.3 在粉末冶金生产操作中，该测试有助于确定高密度零件的冲压和模具要求。 5.4 结果可能会受到测试条件的影响，例如润滑的类型、数量和方法、压实期间的停留时间以及模具材料。压缩性值可能不一定与生产条件下获得的结果一致。

1.1 This laboratory test method covers the determination of the compressibility of metal powders and metal powder mixtures as measured by the extent to which a test portion can be densified under controlled conditions in a specified die. 1.2 Units— With the exception of the values for density and mass, for which the use of gram per cubic centermetre (g/cm 3 ) and gram (g) units is the longstanding 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 compressibility value obtained by this test is a measure of a material characteristic of the powder. 5.2 The test method is useful in research and development projects, as a quality control test in the evaluation and manufacturing control of metal powder production, and as an acceptance test for shipment of metal powder lots. 5.3 In PM production operations, the test is helpful in determining pressing and tooling requirements for high density parts. 5.4 Results may be affected by test conditions such as the type, amount, and method of lubrication, dwell time during compaction, and die material. The compressibility values may not necessarily agree with results obtained under production conditions.