201.0 Aluminum vs. Grade 18 Titanium
201.0 aluminum belongs to the aluminum alloys classification, while grade 18 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is 201.0 aluminum and the bottom bar is grade 18 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 71 | |
| 110 |
| Elongation at Break, % | 4.4 to 20 | |
| 11 to 17 |
| Fatigue Strength, MPa | 120 to 150 | |
| 330 to 480 |
| Poisson's Ratio | 0.33 | |
| 0.32 |
| Shear Modulus, GPa | 27 | |
| 40 |
| Shear Strength, MPa | 290 | |
| 420 to 590 |
| Tensile Strength: Ultimate (UTS), MPa | 370 to 470 | |
| 690 to 980 |
| Tensile Strength: Yield (Proof), MPa | 220 to 400 | |
| 540 to 810 |
Thermal Properties
| Latent Heat of Fusion, J/g | 390 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 330 |
| Melting Completion (Liquidus), °C | 650 | |
| 1640 |
| Melting Onset (Solidus), °C | 570 | |
| 1590 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 550 |
| Thermal Conductivity, W/m-K | 120 | |
| 8.3 |
| Thermal Expansion, µm/m-K | 19 | |
| 9.9 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 30 to 33 | |
| 1.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 87 to 97 | |
| 2.7 |
Otherwise Unclassified Properties
| Density, g/cm3 | 3.1 | |
| 4.5 |
| Embodied Carbon, kg CO2/kg material | 8.7 | |
| 41 |
| Embodied Energy, MJ/kg | 160 | |
| 670 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 19 to 63 | |
| 87 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 330 to 1160 | |
| 1380 to 3110 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 45 | |
| 35 |
| Strength to Weight: Axial, points | 33 to 42 | |
| 43 to 61 |
| Strength to Weight: Bending, points | 37 to 44 | |
| 39 to 49 |
| Thermal Diffusivity, mm2/s | 45 | |
| 3.4 |
| Thermal Shock Resistance, points | 19 to 25 | |
| 47 to 67 |
Alloy Composition
| Aluminum (Al), % | 92.1 to 95.1 | |
| 2.5 to 3.5 |
| Carbon (C), % | 0 | |
| 0 to 0.080 |
| Copper (Cu), % | 4.0 to 5.2 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 0.15 | |
| 0 to 0.25 |
| Magnesium (Mg), % | 0.15 to 0.55 | |
| 0 |
| Manganese (Mn), % | 0.2 to 0.5 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.15 |
| Palladium (Pd), % | 0 | |
| 0.040 to 0.080 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 |
| Silver (Ag), % | 0.4 to 1.0 | |
| 0 |
| Titanium (Ti), % | 0.15 to 0.35 | |
| 92.5 to 95.5 |
| Vanadium (V), % | 0 | |
| 2.0 to 3.0 |
| Residuals, % | 0 | |
| 0 to 0.4 |