Open Access
Table 4.
Change in surface roughness of samples from the initial Ra0.63, microns
| Composition | Steel grade | ||||
|---|---|---|---|---|---|
| U8 | 65G | 45 | St3 | 40H | |
| Movil | 0.684 | 0.672 | 0.676 | 0.655 | 0.648 |
| K-17 | 0.756 | 0.717 | 0.736 | 0.754 | 0.738 |
| Cannon Lard | 0.684 | 0.676 | 0.680 | 0.661 | 0.658 |
| Litol 24 | 0.658 | 0.648 | 0.651 | 0.642 | 0.644 |
| EKS-1 | 0.646 | 0.651 | 0.639 | 0.635 | 0.641 |
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