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. Abbreviation:Bhn
Also called Brinell number.
Origin: named after J.A. Brinell (1849–1925), Swedish engineer
Main Entry: Brinell hardness number Function: noun : a number expressing Brinell hardness and denoting the load applied in testing in kilograms divided by the sphericalarea of indentation produced in the specimen in square millimeters
