The 21st Century has brought exceptional achievements and major advancements in science and research, especially in the ever-developing field of Metals and Alloys. To celebrate the launch of Frontiers in Metals and Alloys, Frontiers has organized a series of special issue Research Topics to highlight the latest advances across this field.Led by Prof. Veerle Keppens (University of Tennessee Knoxville), Specialty Chief Editor for the Physical Properties of Metals section,