hardness
131Brinell hardness number — Metall. a rating obtained from a test (Brinell test) to determine the hardness of a metal by pressing a steel ball of a standard size into the metal using a standard force. Also called Brinell number. Abbr.: Bhn [named after J.A. Brinell (1849… …
132diamond pyramid hardness — Vickers hardness number …