Rockwell hardness test

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Rock·well hard·ness test

(rokwel hahrdnĕs test)
Common dental assessment to determine hardness of ductile materials using a hard ened steel ball or diamond point; hardness is related to depth of penetration and measured directly by the instrument.
See also: Brinell hardness test
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References in periodicals archive ?
Which Rockwell scale is used depends on the type of material that is tested and its thickness.
All components in the kit are hardened to 50-55 on the Rockwell scale.