Converter
method-dependent indentation hardness scale
Rockwell C hardness
reference-only
- Record
- M660
- Definition quality
- Standardized
- Conversion mode
- reference only
- Calculator
- Reference only
Definition
Rockwell hardness is a method-dependent measurement of deformation/indentation response, not a fundamental material property.
History & use
NIST maintains Rockwell hardness reference materials for equipment calibration/verification.
Modern use
NIST maintains Rockwell hardness reference materials for equipment calibration/verification.
Sources & evidence
Source tier — · confidence high