The Armourers and Brasiers' Company Prize is sponsored by the Worshipful Company of Armourers and Brasiers and awarded biennially by the Royal Society "for excellence in materials science and technology" and is accompanied by a £2000 gift.  The medal was first awarded in 1985 to Michael F. Ashby "in recognition of his outstanding contributions to materials science, first for identifying the mechanism underlying and by modelling theoretically a number of phenomena of great importance to the materials engineer".
"in recognition of his outstanding contributions to materials science, first for identifying the mechanism underlying and by modelling theoretically a number of phenomena of great importance to the materials engineer, and second for pioneering the important concepts of deformation and fracture maps which display in a single field the area of dominance of specific flow and fracture mechanisms."
"n recognition of his outstanding work in the field of gas turbine materials and the development of new super alloys and advanced composites such as titanium matrix composites and ceramic matrix composites"
"in recognition of his outstanding work in the field of solid state phase transformation in steels, in particular for his research into the bainite transformations and for his invention of a carbide-free bainitic steel with enhanced wear and fracture resistance."
"in recognition of his outstanding work in the development of phenomenological structure maps for binary and pseudo-binary alloys known as the 'Pettifor Maps', and his vision and leadership in establishing the Materials Modelling Laboratory at Oxford with its strong links to industry and recognised as an international flagship laboratory for modelling"
"in recognition of his outstanding contribution to work in the fields of extractive metallurgy and materials chemistry, in particular for his leading role in the development of the FCC process for the reduction of titanium and other metals from their oxides, and for his promotion of links with industry and other organisations interested in its exploitation"
"in recognition of his work in Solid Oxide Fuel Cells (SOFCs). His fundamental work has been focused on the control of oxygen transportation in ceramic materials, and most recently in applying this in his development of solid oxide fuel cells"
"for her theoretical insight into the many factors affecting the fabrication and performance of organic photovoltaics, which has led to the rational design of these devices and related photodetectors based on organic semiconductors."