Aerospace Engineering > GATE 2025 > Material Selection
A 1 m long rod is to be designed to support an axial tensile load P (P>> weight of the rod). The material for the rod is to be chosen from one of the four provided in the table. Using strength-based failure criterion for design, which material results in the lowest weight of the rod?
| Properties | Material α | Material β | Material γ | Material δ |
| Density (kg/m3) | 2700 | 4500 | 7800 | 9000 |
| Young's modulus (GPa) | 70 | 115 | 200 | 130 |
| Yield Strength (MPa) | 900 | 520 | 270 | 540 |
Correct : a
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