The formula to calculate the Vickers Hardness (HV) is:
\[ HV = 1.854 \cdot \frac{P}{d^2} \]
Where:
Vickers Hardness test consists of applying a force (also called a “load”) on the test material using a diamond indenter, to obtain an indentation.
Indentation Load is the load applied in the microhardness test, typically in the range of 1-1000 grams.
Diagonal Length is the length of the diagonal of the indentation made during the microhardness test, measured in millimeters.
Let's assume the following values:
Using the formula:
\[ HV = 1.854 \cdot \frac{0.9807}{(0.0017)^2} \]
Evaluating:
\[ HV \approx 629118.654 \, \text{Pascals} \]
The Vickers Hardness is approximately 629118.654 Pascals.
| Indentation Load (P) (Newtons) | Diagonal Length (d) (meters) | Vickers Hardness (HV) (Pascals) |
|---|---|---|
| 0.9 | 0.0016 | 651,796.8750 |
| 0.9 | 0.0017 | 577,370.2422 |
| 0.9 | 0.0018 | 515,000.0000 |
| 0.9807 | 0.0016 | 710,241.3281 |
| 0.9807 | 0.0017 | 629,141.1073 |
| 0.9807 | 0.0018 | 561,178.3333 |
| 1.1 | 0.0016 | 796,640.6250 |
| 1.1 | 0.0017 | 705,674.7405 |
| 1.1 | 0.0018 | 629,444.4444 |