Sides | Test samples | Indentation diameter | Average d | Measured HB | |
d1 | d2 | ||||
Inner surface | 1 | 1.13 | 1.125 | 1.127 | 177 |
2 | 1.13 | 1.13 | 1.13 | 176 | |
3 | 1.14 | 1.13 | 1.135 | 178 | |
4 | 1.19 | 1.19 | 1.19 | 158 | |
5 | 1.10 | 1.10 | 1.10 | 187 | |
6 | 1.21 | 1.21 | 1.21 | 153 | |
Outer surface | 1 | 1.13 | 1.134 | 1.132 | 175 |
2 | 1.133 | 1.13 | 1.132 | 175 | |
3 | 1.13 | 1.13 | 1.13 | 176 | |
4 | 1.18 | 1.175 | 1.178 | 161 | |
5 | 1.11 | 1.12 | 1.115 | 184 | |
6 | 1.13 | 1.13 | 1.13 | 176 |