Table 5.
Microhardness HV1 measurement for 42C and 42D steels.
| Material | Cooling Rate (°C/s) | ||||
|---|---|---|---|---|---|
| 0.1 | 1 | 5 | 10 | 50 | |
| HV1 | |||||
| 42C | 236 ± 19 | 389 ± 36 | 685 ± 12 | 684 ± 12 | 755 ± 6 |
| 42D | 204 ± 5 | 324 ± 6 | 540 ± 23 | 617 ± 9 | 642 ± 4 |
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