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Brinell Hardness Number Calculator
Brinell hardness number (HBW) from load, ball diameter and indentation diameter.
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HBW
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Brinell hardness number (HBW) from load, ball diameter and indentation diameter.
Brinell Hardness Number Estimator
Enter your numbers below for an instant estimate.
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💡 Tip: HBW = 2P / (pi D (D – sqrt(D^2 – d^2))).
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Brinell Quick Guide
Typical values for reference.
| Load kgf | Ball mm | Indent mm | HBW |
|---|---|---|---|
| 3000 | 10 | 3 | 415 HBW |
| 3000 | 10 | 4 | 229 HBW |
| 3000 | 10 | 4.5 | 179 HBW |
| 3000 | 10 | 5.5 | 116 HBW |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Brinell Hardness Number Calculator FAQ
Answers to common questions about this calculator.
A hardness measure from the dent left by a hard ball.
No, it is a rough rule for steels.
HBW = 2P / (pi D (D – sqrt(D^2 – d^2))).
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.