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Rockwell Hardness

Hardness determined from size of indentation using a diamond or steel ball and given load.

There are three scales used:

A scale diamond cone with 60 kilogram load.
B scale 1/16" steel ball with 100 kilogram load.
C scale 120° diamond cone with 150 kilogram load.
See also: Alpha Rockwell Hardness, Hardness, Superficial Rockwell Hardness Test.

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Subjects:
Mechanical Engineering
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