CHE 333 Hardness Testing of Materials

For a hardened steel a conical diamond indenter is used. Some indenters are shown below. Force. On modern equipment, a chart exists of force required along with indenter type and major load for several different ranges or hardness scales. For example, the Rockwell “C” hardness scale requires a “C” brale indenter with a force of 150 kg/mm2 . ................
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