Specimens Number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Means |
Hardness without irradiation (HB) | 32 | 35 | 38 | 39 | 32 | 35 | 37 | 35 | 32 | 35 | 35 |
Hardness after irradiation (HB) | 35 | 38 | 42 | 48 | 28 | 39 | 41 | 37 | 33 | 35 | 37.6 |
Hardness change (HB) | 3 | 3 | 4 | 9 | −4 | 4 | 4 | 2 | 1 | 0 | 2.6 |
Change % | 9.38 | 8.57 | 10.53 | 23.08 | −12.50 | 11.43 | 10.81 | 5.71 | 3.13 | 0 | 7.43 |