Grade 31 Titanium vs. 712.0 Aluminum
Grade 31 titanium belongs to the titanium alloys classification, while 712.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is grade 31 titanium and the bottom bar is 712.0 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 70 |
| Elongation at Break, % | 20 | |
| 4.5 to 4.7 |
| Fatigue Strength, MPa | 300 | |
| 140 to 180 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Shear Modulus, GPa | 41 | |
| 27 |
| Shear Strength, MPa | 320 | |
| 180 |
| Tensile Strength: Ultimate (UTS), MPa | 510 | |
| 250 to 260 |
| Tensile Strength: Yield (Proof), MPa | 450 | |
| 180 to 200 |
Thermal Properties
| Latent Heat of Fusion, J/g | 420 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 320 | |
| 190 |
| Melting Completion (Liquidus), °C | 1660 | |
| 640 |
| Melting Onset (Solidus), °C | 1610 | |
| 610 |
| Specific Heat Capacity, J/kg-K | 540 | |
| 870 |
| Thermal Conductivity, W/m-K | 21 | |
| 160 |
| Thermal Expansion, µm/m-K | 8.7 | |
| 24 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.4 | |
| 40 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 6.9 | |
| 120 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.5 | |
| 3.0 |
| Embodied Carbon, kg CO2/kg material | 36 | |
| 8.0 |
| Embodied Energy, MJ/kg | 600 | |
| 150 |
| Embodied Water, L/kg | 230 | |
| 1140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 99 | |
| 11 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 940 | |
| 240 to 270 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 46 |
| Strength to Weight: Axial, points | 32 | |
| 24 to 25 |
| Strength to Weight: Bending, points | 32 | |
| 30 to 31 |
| Thermal Diffusivity, mm2/s | 8.5 | |
| 62 |
| Thermal Shock Resistance, points | 39 | |
| 11 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 90.7 to 94 |
| Carbon (C), % | 0 to 0.080 | |
| 0 |
| Chromium (Cr), % | 0 | |
| 0.4 to 0.6 |
| Cobalt (Co), % | 0.2 to 0.8 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 0 to 0.5 |
| Magnesium (Mg), % | 0 | |
| 0.5 to 0.65 |
| Manganese (Mn), % | 0 | |
| 0 to 0.1 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Oxygen (O), % | 0 to 0.35 | |
| 0 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.3 |
| Titanium (Ti), % | 97.9 to 99.76 | |
| 0.15 to 0.25 |
| Zinc (Zn), % | 0 | |
| 5.0 to 6.5 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.2 |