Vickers hardness rating scale
Archaeometallurgy, Guidelines for Best Practice, published by Historic England in 2015, defines hardness as: ‘…a measurement of the strength of a material (its ability to resist plastic deformation).’
The Vickers hardness test can be used to measure the hardness of all materials including metals, ceramics and so on. It is also referred to as a microhardness test method (since it only requires a small test sample) and is based on an optical measurement system.
Vickers Hardness (HV) is calculated by measuring the diagonal lengths of an indentation produced by a diamond pyramid indenter on small samples that have highly polished surfaces. The lengths are measured to determine the hardness, which is based on a table or formula. Results are measured in units of hardness known as the Vickers Pyramid Number (HV).
[edit] Related articles on Designing Buildings Wiki
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
ECA Edmundson apprentice of the year award
Finalists announced.
Major new study exposes serious knowledge gaps.
Generating energy from internal light as well as sunshine.
ECA welcomes plans to strengthen subcontractor quality control.
Combining mid-career qualifications with experience broadens career opportunities.
Why being a mentor can help your career.
Channel 4 broadcaster to host 125th anniversary ceremony.
Listed structures on the rail network
Heritage interests and operational requirements must be balanced.
Historic England publishes research into embodied carbon when retrofitting traditional buildings.
New Prime Minister delivers on ECA call for cut in electricity costs.
CIOB reacts to the announcement of Andy Burnham as Prime Minister.
Heritage and conservation science workforce survey - Have your say.