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Brinell hardness number

noun Metallurgy.
  1. 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
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Origin of Brinell hardness number

named after J.A. Brinell (1849–1925), Swedish engineer
Also called Brinell number.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for brinell hardness number

Brinell hardness number

noun
  1. 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
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Word Origin

C19: named after Johann A. Brinell (1849–1925), Swedish engineer
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