Rockwell hardness
Revision as of 12:31, 27 April 2013 by (username removed)
Description
A numerical measurement of the hardness of a material. The Rockwell hardness is determined by dropping a steel ball or diamond-tip cone of given diameter from a set distance on the test piece then measuring the size of the indentation. The resulting number is specified with a prefix that gives the load and type of indentor, i.e., HRC 30.
Synonyms and Related Terms
Rockwell number; Rockwell Hrte (Deut.); duret Rockwell (Fr.);
Authority
- G.S.Brady, G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 940
- Theodore J. Reinhart, Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
- Richard S. Lewis, Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993