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Rockwell hardness test

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Rockwell hardness test [′räk‚wel ′härd·nəs ‚test]
(engineering)
One of the arbitrarily defined measures of resistance of a material to indentation under static or dynamic load; depth of indentation of either a steel ball or a 120° conical diamond with rounded point, ¹⁄₁₆, ⅛, ¼, or ½ inch (1.5875, 3.175, 6.35, 12.7 millimeters) in diameter, called a brale, under prescribed load is the basis for Rockwell hardness; 60, 100, 150 kilogram load is applied with a special machine, and depth of impression under initial minor load is indicated on a dial whose graduations represent hardness number.
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2 Effect of Rockwell Indenter Geometry Parameter D on Indentation Depth In a Rockwell hardness test, the indenter's cone angle affects the HRC value.
Self-similarity simplification approaches for the modeling and ... by deWit, Roland / Journal of Research of the National Institute of Standards and Technology
Indentation Hardness Tests For the Rockwell Hardness test, the ASTM D 785 test procedure was followed.
Scratch Resistance of Mineral-Filled Polypropylene Materials by CHU, J.; XIANG, C.; SUE, H.-J.; HOLLIS, R. DAMON / Polymer Engineering and Science
The Rockwell hardness test measures the depth of residual penetration by a steel or diamond cone under fixed load conditions.
Testing and inspection: the final step in assuring casting quality by Bex, Tom / Modern Casting
 
 
 
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