| Materials | Safety Factor | |
| Maximum | Minimum | |
| Aluminium 332 Alloy | 15.0000 | 1.0000 |
| Aluminium 390 Alloy | 15.0000 | 2.1819 |
| Aluminium 413 Alloy | 15.0000 | 1.0000 |
| Aluminium 384 Alloy | 15.0000 | 1.0000 |