MechanicsLab Level
Hardness Converter
Quickly convert approximate material hardness values across Vickers (HV), Brinell (HB), and Rockwell (HRC/HRB) scales.
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Hardness Conversions
Interpolated equivalent values (Clamped to ASTM ranges)
Vickers Hardness
---HV
Brinell Hardness
---HB
Rockwell C
N/AHRC
Rockwell B
N/AHRB
Scientific Assumptions & Methodology
- Conversions correspond to carbon and low-alloy steels (ASTM E140 reference values).
- Conversions are purely empirical and vary significantly for non-ferrous metals (Al, Cu, Ti) or ceramics.
- Tensile strength correlation applies to structural steels only.
Limitations & Educational Warnings
- Do not use these conversions for safety-critical mechanical design or certification testing.
- Hardness scales measure different physical responses (indentation depth vs diagonal length), making exact conversions impossible.