ASTM F3049, Guide for Characterizing Properties of Metal Powders Used for Additive Manufacturing Processes, will benefit makers and users of metal powders. According to ASTM member John A. Slotwinski, this standard will help "point readers to existing metal powder standards that may be appropriate for additive manufacturing powders. Included guidance will aid those who want to measure properties of AM powders but may be unaware of what standard methods exist.