Grade 20 Titanium vs. 7022 Aluminum
Grade 20 titanium belongs to the titanium alloys classification, while 7022 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is grade 20 titanium and the bottom bar is 7022 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 70 |
| Elongation at Break, % | 5.7 to 17 | |
| 6.3 to 8.0 |
| Fatigue Strength, MPa | 550 to 630 | |
| 140 to 170 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Shear Modulus, GPa | 47 | |
| 26 |
| Shear Strength, MPa | 560 to 740 | |
| 290 to 320 |
| Tensile Strength: Ultimate (UTS), MPa | 900 to 1270 | |
| 490 to 540 |
| Tensile Strength: Yield (Proof), MPa | 850 to 1190 | |
| 390 to 460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 370 | |
| 200 |
| Melting Completion (Liquidus), °C | 1660 | |
| 640 |
| Melting Onset (Solidus), °C | 1600 | |
| 480 |
| Specific Heat Capacity, J/kg-K | 520 | |
| 870 |
| Thermal Expansion, µm/m-K | 9.6 | |
| 24 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.0 | |
| 2.9 |
| Embodied Carbon, kg CO2/kg material | 52 | |
| 8.5 |
| Embodied Energy, MJ/kg | 860 | |
| 150 |
| Embodied Water, L/kg | 350 | |
| 1130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 150 | |
| 29 to 40 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2940 to 5760 | |
| 1100 to 1500 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 33 | |
| 47 |
| Strength to Weight: Axial, points | 50 to 70 | |
| 47 to 51 |
| Strength to Weight: Bending, points | 41 to 52 | |
| 47 to 50 |
| Thermal Shock Resistance, points | 55 to 77 | |
| 21 to 23 |
Alloy Composition
| Aluminum (Al), % | 3.0 to 4.0 | |
| 87.9 to 92.4 |
| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Chromium (Cr), % | 5.5 to 6.5 | |
| 0.1 to 0.3 |
| Copper (Cu), % | 0 | |
| 0.5 to 1.0 |
| Hydrogen (H), % | 0 to 0.020 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 0 to 0.5 |
| Magnesium (Mg), % | 0 | |
| 2.6 to 3.7 |
| Manganese (Mn), % | 0 | |
| 0.1 to 0.4 |
| Molybdenum (Mo), % | 3.5 to 4.5 | |
| 0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.12 | |
| 0 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.5 |
| Titanium (Ti), % | 71 to 77 | |
| 0 to 0.2 |
| Vanadium (V), % | 7.5 to 8.5 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 4.3 to 5.2 |
| Zirconium (Zr), % | 3.5 to 4.5 | |
| 0 to 0.2 |
| Residuals, % | 0 | |
| 0 to 0.15 |