Research Article
Laser Treatment for Strengthening of Thin Sheet Steel
Table 2
Mechanical properties of steel C22Е (1.1151) according to standard EN 10083-2:2006 [
23].
| | Heat treatment | Yield strength (МРа) | Ultimate tensile strength (МРа) | Elongation (%) | Hardness (НВ) | | Min | Min | Min | Max |
| | Rolled | | 490 | 7 | 207 | | Annealing or tempering 600 (°C) | 230 | 390 | 21 | 163 | | Normalizing 900 (°C) | 240 | 430 | 24 | 101–143 | | Quenching 880 (°C) | 340 | 590 | 18 | 370 | | Quenching 880°C + tempering 600 (°C) | 340 | 500–650 | 20 | 143–179 |
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