MANUAL Published: 01 January 2007
MNL11203M

Special Methods for Hardness Testing

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SPECIAL HARDNESS TESTING PROCEDURES INCLUDE THE MARTENS scratch hardness determination as well as the Mohs scratch hardness. In the Martens procedure, a specimen surface under a specified test force is scratched by a diamond cone with a 90-deg apical angle. The test force F is varied until a scratch width of 10 μm is microscopically measured. In this way, a particular scratch hardness value can be attributed to the specimen.

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Developed by Committee: E04
Pages: 646–646
DOI: 10.1520/MNL11203M
ISBN-EB: 978-0-8031-5691-3
ISBN-13: 978-0-8031-4265-7