1.1 本试验方法包括金属粉末骨架密度的测定。本试验方法规定了适用于许多商用比重计的一般程序。该方法为所列材料提供了特定的样品脱气程序。它包括其他金属的附加一般脱气说明。理想气体定律是所有计算的基础。 1.2 本试验方法不包括适用于金属材料放气的所有现有程序。所包含的程序为实验室间研究期间分析的样品提供了可接受的结果。研究者应确定所列程序的适当性。 1.3 单位-- 除了用于确定密度的密度值和质量外，使用克/立方厘米（g/cm 3. )而克（g）单位是长期的行业惯例，以国际单位制为单位的数值应被视为标准。 1.4 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。 1.5 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 金属的供应商和用户都可以从这些材料的骨架密度知识中受益。许多中间和最终加工步骤的结果由金属的骨架密度控制或与之相关。此外，对于成品的全部或一部分，许多烧结或铸造金属结构的性能可以根据起始金属粉末的骨架密度来预测。

1.1 This test method covers determination of skeletal density of metal powders. The test method specifies general procedures that are applicable to many commercial pycnometry instruments. The method provides specific sample outgassing procedures for listed materials. It includes additional general outgassing instructions for other metals. The ideal gas law forms the basis for all calculations. 1.2 This test method does not include all existing procedures appropriate for outgassing metal materials. The included procedures provided acceptable results for samples analyzed during an interlaboratory study. The investigator shall determine the appropriateness of listed procedures. 1.3 Units— With the exception of the values for density and the mass used to determine density, for which the use of the gram per cubic centimetre (g/cm 3 ) and gram (g) units is the longstanding industry practice, the values in SI units are to be regarded as standard. 1.4 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. 1.5 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 Both suppliers and users of metals can benefit from knowledge of the skeletal density of these materials. Results of many intermediate and final processing steps are controlled by or related to skeletal density of the metal. In addition, the performance of many sintered or cast metal structures may be predicted from the skeletal density of the starting metal powder, for all or a portion of the finished piece.