Journal Published Online: 01 July 1988
Volume 16, Issue 4

Measurement of the Spherical Tip of Rockwell Indenters



Recent international comparisons of primary standards of Rockwell C hardness showed that the indenter shape is largely responsible for differences in measurement results. Measurements, especially of spherical-tip shape, made by means of high-magnification (500 ×) profile projectors proved to be affected by an uncertainty that also depended on the operator. In connection with such problems, a measurement system using a rotating table centered by means of an air bearing was developed together with a method for result analysis so as to allow the evaluations required by ASTM and ISO standards to be made quickly.

Author Information

Barbato, G
Hardness Research Group, Istituto di Metrologia, “G.Colonnetti”, Torino, Italy
Desogus, S
Hardness Research Group, Istituto di Metrologia, “G.Colonnetti”, Torino, Italy
Pages: 6
Price: $25.00
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Stock #: JTE11080J
ISSN: 0090-3973
DOI: 10.1520/JTE11080J