1.1 该实验室测试方法涵盖了金属粉末和金属粉末混合物的可压缩性的测定，其通过在特定模具中受控条件下测试部分可致密化的程度来测量。 1.2 单位- 密度和质量的数值除外，其中使用克/立方厘米（g/cm 3 ）和克（g）单位是长期的行业惯例，以英寸-磅单位表示的值将被视为标准。括号中给出的值是对SI单位的数学转换，仅供参考，不被视为标准。 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。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 通过该测试获得的压缩性值是粉末的材料特性的量度。 5.2 该测试方法在研究和开发项目中有用，作为金属粉末生产的评估和制造控制中的质量控制测试，以及作为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，该测试有助于确定零件的冲压和模具要求。5.4 结果可能受到测试条件的影响，例如润滑的类型、量和方法、压实期间的停留时间和模具材料。压缩性值不一定与在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 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.