Checking the hardness of a mild steel piece is an example of which activity?
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Which steel hardness test to use. Traditionally, Brinell is used for softened steels and Vickers is used more widely. These tests measure the diameter of the indentation left on the surface of the metal. The Rockwell method assesses steel hardness by measuring the depth of penetration of an indentation
Explanation:
The SI unit of hardness is N/mm². The unit Pascal is thus used for hardness as well but hardness must not be confused with pressure. The different types of hardness discussed above have different scales of measurement
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