Knoop hardness (KH)
Definition
Material hardness test in which the depth (and not the area) of indent caused by the impact of a highly polished and elongated pyramidical (pointed rhombohedral) diamond is measured. KH is expressed as a ratio of the applied force in kilograms and the depth of penetration in millimeters.
Knoop hardness (KH) is in the Industries, Manufacturing, & Technology subject.
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