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TAKE THE QUIZ“hardness test”
The following 2 entries include the term hardness test.
monotron hardness test
noun: an indentation test that measures the load required to produce a definite penetration of steel by a standard spherical penetrator
Vickers hardness test
noun: an indentation hardness test for metals in which a 136-degree diamond pyramid is pressed into the surface of the metal being tested by a load of 5 to 120 kilograms
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Merriam-Webster unabridged
