Unformatted text preview: After 15 seconds the major load is removed. The specimen is allowed to recover for 15 seconds and then the hardness is read off the dial with the minor load still applied. Specimen size: A standard specimen of 6.4mm (0.25 in) thickness is either molded or cut from a sheet. Data: The hardness is read directly from the dial. The higher the number in each scale, the harder the material. Equipment Used: Rockwell Hardness Tester...
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- Fall '10
- Rockwell scale, Vickers hardness test, rockwell hardness, Rockwell Hardness Tester