7050 Aluminum vs. 2218 Aluminum
Both 7050 aluminum and 2218 aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is 7050 aluminum and the bottom bar is 2218 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 73 |
| Elongation at Break, % | 2.2 to 12 | |
| 6.8 to 10 |
| Fatigue Strength, MPa | 130 to 210 | |
| 110 |
| Poisson's Ratio | 0.32 | |
| 0.33 |
| Shear Modulus, GPa | 26 | |
| 27 |
| Shear Strength, MPa | 280 to 330 | |
| 210 to 250 |
| Tensile Strength: Ultimate (UTS), MPa | 490 to 570 | |
| 330 to 430 |
| Tensile Strength: Yield (Proof), MPa | 390 to 500 | |
| 260 to 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 370 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 190 | |
| 220 |
| Melting Completion (Liquidus), °C | 630 | |
| 640 |
| Melting Onset (Solidus), °C | 490 | |
| 510 |
| Specific Heat Capacity, J/kg-K | 860 | |
| 870 |
| Thermal Conductivity, W/m-K | 140 | |
| 140 |
| Thermal Expansion, µm/m-K | 24 | |
| 22 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 35 | |
| 37 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 100 | |
| 110 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 11 |
| Density, g/cm3 | 3.1 | |
| 3.1 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 8.2 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1120 | |
| 1130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 10 to 55 | |
| 27 to 31 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1110 to 1760 | |
| 450 to 650 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 45 | |
| 45 |
| Strength to Weight: Axial, points | 45 to 51 | |
| 30 to 39 |
| Strength to Weight: Bending, points | 45 to 50 | |
| 34 to 41 |
| Thermal Diffusivity, mm2/s | 54 | |
| 52 |
| Thermal Shock Resistance, points | 21 to 25 | |
| 15 to 19 |
Alloy Composition
| Aluminum (Al), % | 87.3 to 92.1 | |
| 88.8 to 93.6 |
| Chromium (Cr), % | 0 to 0.040 | |
| 0 to 0.1 |
| Copper (Cu), % | 2.0 to 2.6 | |
| 3.5 to 4.5 |
| Iron (Fe), % | 0 to 0.15 | |
| 0 to 1.0 |
| Magnesium (Mg), % | 1.9 to 2.6 | |
| 1.2 to 1.8 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0 to 0.2 |
| Nickel (Ni), % | 0 | |
| 1.7 to 2.3 |
| Silicon (Si), % | 0 to 0.12 | |
| 0 to 0.9 |
| Titanium (Ti), % | 0 to 0.060 | |
| 0 |
| Zinc (Zn), % | 5.7 to 6.7 | |
| 0 to 0.25 |
| Zirconium (Zr), % | 0.080 to 0.15 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.15 |