| Alloy System | PA | No Def | 8% Def | 15% Def |
| Al-Si-Ge | HV | 65 ± 4 | 72 ± 4 | 89 ± 5 |
| ta (h) | 20 | 20 | 20 | |
| Al-Cu | HV | 134 ± 7 | 130 ± 4 | 135 ± 2 |
| ta (h) | 100 | 20 | 20 | |
| Al-Cu-Si-Ge | HV | 170 ± 10 | 190 ± 10 | 170 ± 10 |
| ta (h) | 20 | 20 | 3 |