Table 1. Strength-to-modulus and density ratios for commonly used materials in the space industry.
| Material | Material Properties | Property Ratios | ||||
|---|---|---|---|---|---|---|
| Sy (GPa) | E (GPa) | ρ (g/cm3) | Sy/(Eρ) *1000 | Sy/E *1000 | Sy/ρ *1000 | |
| Vitreloy 1 (metallic glass) | 1.8 | 95 | ∼5.8 | 3.27 | 18.95 | 310.3 |
| Al alloy 7050 | ∼0.44 | 70.3 | 2.82 | 2.22 | 6.26 | 156 |
| Al alloy 7075 | ∼0.45 | 71 | 2.8 | 2.26 | 6.34 | 160.7 |
| Ti-6Al-4V | 0.825 | 110 | 4.43 | 1.70 | 7.52 | 186.7 |
| Elgiloy (85% HT) | 2.12 | 189.6 | 8.30 | 1.35 | 11.2 | 255 |
| Inconel 718 (Nickel alloy) | 1.034 | 202.7 | 4.43 | 1.15 | 5.10 | 233 |
| MP35N (65%) | 1.62 | 234.8 | 8.43 | 0.82 | 6.90 | 192 |
| Stainless 17-7TH 1050 | 1.034 | 200 | 7.64 | 0.68 | 5.17 | 135 |
| Stainless 15-5PH H1025 | 0.986 | 196.5 | 7.83 | 0.64 | 5.02 | 126 |
| Invar 36 (cold rolled) | 0.679 | 148 | 8.05 | 0.57 | 4.59 | 84.3 |
| Tantalum (UNS R05400) | 0.22 | 185 | 16.6 | 0.07 | 1.19 | 13.2 |
| Copper alloy (C10200-060) | 0.0758 | 117.2 | 8.94 | 0.072 | 0.65 | 8.5 |
| Teflon PTFE film | 0.018 | 0.5 | 2.2 | 16.4 | 36 | 8.2 |
| Mylar A film | 0.103 | 3.8 | 1.4 | 19.4 | 27 | 73.5 |
| Kapton HN film | 0.07 | 2.8 | 1.42 | 17.6 | 25 | 49 |
| Teflon FEP film | 0.012 | 0.48 | 2.15 | 11.6 | 25 | 5.6 |
| Tefzel film | 0.006 | 1.2 | 1.7 | 3 | 5 | 3.5 |
| Butyl rubber | 0.014 | 3.4 | 0.92 | 4.5 | 4.1 | 15 |