Brinell hardness number

American  

[bri-nel hahrd-nis nuhm-ber] / brɪˈnɛl ˈhɑrd nɪs ˌnʌm bər /

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. Bhn, HB

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Brinell hardness number British  

/ brɪˈnɛl /

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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Etymology

Origin of Brinell hardness number

Named after J.A. Brinell (1849–1925), Swedish engineer