ISO/ASTM 52907 defines technical specifications for metal powders intended for additive manufacturing applications, detailing key properties, test methods, and documentation requirements. It covers sampling procedures, particle size distribution, chemical composition, densities, morphology, flowability, and contamination control, along with guidelines for packaging and storage. By establishing uniform criteria for powder characterization, traceability, and quality assurance, the document supports consistent feedstock performance across various metal AM processes.