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Brinell hardness test
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==History== Premiered by [[Sweden|Swedish]] [[engineer]] [[Johan August Brinell]] at the 1900 Paris Exposition, it was the first widely used and standardised hardness test in [[engineering]] and [[metallurgy]]. The large size of indentation and thus possible damage to test-pieces limits its usefulness. However, it also had the useful feature that the hardness value divided by two gave the approximate [[Ultimate tensile strength|UTS]] in [[Ksi (unit)|ksi]] for steels. This feature contributed to its early adoption over competing hardness tests.
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