7175 Aluminum vs. 7020 Aluminum
Both 7175 aluminum and 7020 aluminum are aluminum alloys. They have a very high 96% 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 7175 aluminum and the bottom bar is 7020 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 70 |
| Elongation at Break, % | 3.8 to 5.9 | |
| 8.4 to 14 |
| Fatigue Strength, MPa | 150 to 180 | |
| 110 to 130 |
| Poisson's Ratio | 0.32 | |
| 0.33 |
| Shear Modulus, GPa | 26 | |
| 26 |
| Shear Strength, MPa | 290 to 330 | |
| 110 to 230 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 570 | |
| 190 to 390 |
| Tensile Strength: Yield (Proof), MPa | 430 to 490 | |
| 120 to 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 380 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 210 |
| Melting Completion (Liquidus), °C | 640 | |
| 650 |
| Melting Onset (Solidus), °C | 480 | |
| 610 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 880 |
| Thermal Conductivity, W/m-K | 140 | |
| 150 |
| Thermal Expansion, µm/m-K | 23 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 33 | |
| 39 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 99 | |
| 120 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 9.5 |
| Density, g/cm3 | 3.0 | |
| 2.9 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 8.3 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1130 | |
| 1150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 18 to 29 | |
| 23 to 46 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1310 to 1730 | |
| 110 to 690 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 46 | |
| 47 |
| Strength to Weight: Axial, points | 48 to 52 | |
| 18 to 37 |
| Strength to Weight: Bending, points | 48 to 51 | |
| 25 to 41 |
| Thermal Diffusivity, mm2/s | 53 | |
| 59 |
| Thermal Shock Resistance, points | 23 to 25 | |
| 8.3 to 17 |
Alloy Composition
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| Aluminum (Al), % | 88 to 91.4 | |
| 91.2 to 94.8 |
| Chromium (Cr), % | 0.18 to 0.28 | |
| 0.1 to 0.35 |
| Copper (Cu), % | 1.2 to 2.0 | |
| 0 to 0.2 |
| Iron (Fe), % | 0 to 0.2 | |
| 0 to 0.4 |
| Magnesium (Mg), % | 2.1 to 2.9 | |
| 1.0 to 1.4 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0.050 to 0.5 |
| Silicon (Si), % | 0 to 0.15 | |
| 0 to 0.35 |
| Titanium (Ti), % | 0 to 0.1 | |
| 0 to 0.25 |
| Zinc (Zn), % | 5.1 to 6.1 | |
| 4.0 to 5.0 |
| Zirconium (Zr), % | 0 | |
| 0.080 to 0.25 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |