Table 2 Material properties.
| Â | Value | Unit | ||||||
|---|---|---|---|---|---|---|---|---|
Titanium | SCM440 | Vacodur | C1020P-1/4H | PNF1500 | SmCo | AISI 440Â C | ||
Modulus of elasticity | 114 | 205 | 200 | 117 | 170 | 159 | 208 | Gpa |
Poisson ratio | 0.33 | 0.29 | 0.33 | 0.31 | 0.3 | 0.3 | 0.28 | – |
Thermal expansion coefficient | 9.2 × 10− 6 | 13.7 × 10− 6 | 9.5 × 10− 6 | 17.7 × 10− 6 | 13.2 × 10− 6 | 9.5 × 10− 6 | 10.3 × 10− 6 | 1/K |
Thermal Conductivity | 6.7 | 42.6 | 32 | 383 | 24 | 12.793 | 16.7 | W/m/K |
Density | 4430 | 7850 | 8120 | 8900 | 7650 | 8300 | 7,800 | kg/m3 |
Yield strength | 827 | 910 | 390 | 215 | 340 | 40 (Tensile), 1000 (Compressive) | 1,900 | Mpa |
Components | Shaft | Shaft | Main generator | Main generator, Exciter | Exciter | PMG | Bearing | – |
