Rockwell hardness

noun
Rock·​well hardness | \ ˈräˌkwel-, -kwəl- \

Definition of Rockwell hardness

: the hardness of a metal or alloy measured by an apparatus in which a diamond-pointed cone is pressed into the metal to a standard depth to determine the relative resistance to penetration as indicated automatically by a number on a dial

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History and Etymology for Rockwell hardness

after Stanley P. Rockwell, 20th century American metallurgist

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Dictionary Entries Near Rockwell hardness

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Statistics for Rockwell hardness

Cite this Entry

“Rockwell hardness.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Rockwell%20hardness. Accessed 7 Dec. 2021.

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