Hardness
Classhttps://www.ontologyrepository.com/CommonCoreOntologies/Hardness
Hardness is a quality of a material entity that is its resistance to localised plastic deformation, such as indentation or scratching. It is reported on a variety of scales tied to the test method used.
Examples
- Rockwell hardness of a die
- scratch resistance of a coating
Where it sits in the suite
Hardness is defined in the Common Core Ontologies, a mid-level suite that specialises the top-level categories of Basic Formal Ontology. It is released as part of the maintained, logically consistent CCO release and is reused across the connected ontology modules.