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Definition of Brinell hardness number
: a number expressing Brinell hardness and denoting the load applied in testing in kilograms divided by the spherical area of indentation produced in the specimen in square millimeters
— called also Brinell number
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Merriam-Webster unabridgedWords at Play
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Time Traveler for Brinell hardness number
The first known use of Brinell hardness number was in 1915
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