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Brinell Hardness Number Calculator — result sheet
Calculate a simplified Brinell hardness number from force, indenter diameter, and indentation diameter.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: HB = 2P/[πD(D − √(D²−d²))].
The equation relates test force to the curved spherical-cap area represented by an indentation diameter.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Test force — N; minimum 1.0E-6; maximum 1000000000
- Indenter diameter — mm; minimum 1.0E-6; maximum 1000000
- Indentation diameter — mm; minimum 1.0E-6; maximum 1000000
Worked example
| Input | Value |
|---|---|
| Test force | 3000 |
| Indenter diameter | 10 |
| Indentation diameter | 2 |
Brinell hardness ≈ 945.3 N/mm².
Assumptions and limits
- Force is in newtons and diameters are in millimetres; indentation diameter is smaller than indenter diameter.
- The test follows the idealized Brinell geometry convention.
- Material standards, dwell time, surface preparation, uncertainty, and acceptance limits are not inferred.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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