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. Abbreviations: Bhn, HB
- Also called Bri·nell num·ber [bri-nel-nuhm-ber] /brɪˈnɛl ˌnʌm bər/ .
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British Dictionary definitions for Brinell hardness number
a measure of the hardness of a material obtained by pressing a hard steel ball into its surface; it is expressed as the ratio of the load on the ball in kilograms to the area of the depression made by the ball in square millimetres
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012