Medical Dictionary

Brinell hardness

noun Bri·nell hardness \brə-ˌnel-\

Medical Definition of BRINELL HARDNESS

:  the hardness of a metal or alloy measured by hydraulically pressing a hard ball under a standard load into the specimen

Biographical Note for BRINELL HARDNESS

Brinell, Johan August (1849–1925), Swedish engineer. After studying the internal composition of steel during cooling and heating, Brinell devised his hardness test, which was first displayed in 1900 at the Paris Exposition.

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