Brinell Hardness Number Calculator
Calculate BHN using the formula: $$ BHN = \frac{2P}{\pi D \Bigl(D – \sqrt{D^2 – d^2}\Bigr)} $$
* Ensure \(D^2 \ge d^2\) and use consistent units (P in kgf, D and d in mm).
Step 1: Enter Parameters
e.g., 300 kgf
e.g., 10 mm
e.g., 5 mm
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