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🔧 Rockwell Hardness Conversion Calculator
Convert between Rockwell hardness scales and other hardness measurement systems
📐 Hardness Conversion Formulas
HRC = 100 - (h/0.002)
HRB = 130 - (h/0.002)
HRA = 100 - (h/0.002)
BHN = 2F/(πD(D - √(D² - d²)))
HR = Rockwell hardness, h = indentation depth, F = force, D = ball diameter, d = indentation diameter
💡 Tips
- Rockwell C is used for hard materials (steel, hard alloys)
- Rockwell B is used for softer materials (brass, aluminum)
- Rockwell A is used for thin materials and case-hardened parts
- Conversions are approximate and material-dependent
- Always verify with actual testing when possible
- Different scales have different load and indenter combinations