Researcher performing a microhardness test. The probe within the apparatus applies a known pressure to the surface of a material at several points. The surface is then scanned and measurements of the indents taken
Andrew Brookes, National Physical Laboratory/SPL
The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.
Units of hardness are linked to calculations of stress. Hardness is also related to yield strength.
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