Open Access
Table 5
Measurement results for Ra characteristic.
| Measured value | Ra value in [μm] for class 12 | Ra value in [μm] for class 27 | Ra value in [μm] for class 33 |
|---|---|---|---|
| 1 | 0.387 | 2.378 | 4.277 |
| 2 | 0.326 | 2.706 | 4.149 |
| 3 | 0.408 | 2.141 | 3.737 |
| 4 | 0.304 | 2.156 | 3.983 |
| 5 | 0.335 | 2.247 | 4.932 |
| 6 | 0.291 | 1.853 | 4.710 |
| 7 | 0.349 | 1.966 | 4.337 |
| 8 | 0.320 | 1.820 | 4.629 |
| 9 | 0.363 | 2.484 | 4.166 |
| 10 | 0.331 | 2.649 | 3.824 |
| Mean value | 0.342 | 2.240 | 4.274 |
| Standard deviation | 0.036 | 0.313 | 0.388 |
| Reference value | 0.4 | 2.240 | 4.500 |
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