1.1 本指南向读者介绍了金属粉末表征技术，这些技术可能对基于粉末的添加剂制造工艺有用，包括粘合剂喷射、定向能量沉积和粉末床融合。它让读者参考其他现有标准，这些标准可能适用于在添加剂制造系统中加工的未加工和使用过的金属粉末的特性。 2. 1.2 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。 1.3 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====== 4.1 确定这些工艺中使用的原料粉末的特性是行业对粉末选择的信心以及生产具有已知和可预测特性的一致成分的能力的必要条件。本指南旨在为添加剂制造工艺中使用的金属粉末的购买者、供应商或生产商提供现有标准或现有标准变体的参考，这些标准或变体可用于表征添加剂制造工艺中使用的金属粉末的特性。它将作为未来开发一套特定标准测试方法的起点，该测试方法将解决对金属基添加剂制造系统及其生产的部件的性能至关重要的每个单独属性或属性类型。虽然本标准的重点是金属粉末，但一些参考方法也可能适用于非金属粉末- 金属粉末。

1.1 This guide introduces the reader to techniques for metal powder characterization that may be useful for powder-based additive manufacturing processes including binder jetting, directed energy deposition, and powder bed fusion. It refers the reader to other, existing standards that may be applicable for the characterization of virgin and used metal powders processed in additive manufacturing systems. 2 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 ====== 4.1 Determining the properties of the feedstock powder used in these processes is a necessary condition for industry’s confidence in powder selection and ability to produce consistent components with known and predictable properties. The intention of this guide is to provide purchasers, vendors, or producers of metal powder to be used in additive manufacturing processes with a reference for existing standards or variations of existing standards that may be used to characterize properties of metal powders used for additive manufacturing processes. It will serve as a starting point for the future development of a suite of specific standard test methods that will address each individual property or property type that is important to the performance of metal-based additive manufacturing systems and the components produced by them. While the focus of this standard is on metal powder, some of the referenced methods may also be appropriate for non-metal powders.