Brinell hardness number(redirected from Brinell, Johan August)
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Brinell hardness number
n. Abbr. Bhn or HB
The numerical value assigned to the Brinell hardness of metals and alloys. Also called Brinell number.
Brinell hardness number(brɪˈnɛl)
(General Engineering) 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
[C19: named after Johann A. Brinell (1849–1925), Swedish engineer]
Bri•nell′ hard′ness num`ber(brɪˈnɛl)
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. Abbr.: Bhn
[after J.A. Brinell (1849–1925), Swedish engineer]