Brinell test

Brinell test
Brinell test [bri nel′]
after J. A. Brinell (1849-1925), Swed engineer
a test for determining the relative hardness (Brinell hardness) of a metal by measuring the diameter of the indentation made when a hardened steel ball is forced into the metal under a given pressure: the measure of hardness (Brinell number) is equal to the load in kilograms divided by the surface area in square millimeters of the indentation

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Universalium. 2010.