Powder characterization and handling in PM are important issues and required powder properties will vary between different component manufacturing processes. By understanding and controlling these, the final material properties for different applications can be improved and become more reliable. In this study, metal powders used in additive manufacturing have been investigated regarding particle size and shape using dynamic image analysis. In parallel, powder flow characteristics have been evaluated with a powder rheometer. Correlations within the results have been found between particle shape and powder flow characteristic that could explain certain effects of the powder processing in the additive manufacturing processes.