| No. | Tensile bonding strength (MPa) |
| 1 | 3.14 |
| 2 | 4.58 |
| 3 | 3.78 |
| 4 | 4.07 |
| 5 | 4.21 |
| 6 | 6.96 |
| 7 | 5.71 |
| 8 | 3.72 |
| 9 | 5.12 |
| 10 | 3.58 |
| average | 4.49 |