772.0 Aluminum vs. 8021 Aluminum
Both 772.0 aluminum and 8021 aluminum are aluminum alloys. They have a moderately high 92% of their average alloy composition in common.
For each property being compared, the top bar is 772.0 aluminum and the bottom bar is 8021 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 69 | |
| 70 |
| Elongation at Break, % | 6.3 to 8.4 | |
| 2.3 |
| Fatigue Strength, MPa | 94 to 160 | |
| 61 |
| Poisson's Ratio | 0.32 | |
| 0.33 |
| Shear Modulus, GPa | 26 | |
| 26 |
| Tensile Strength: Ultimate (UTS), MPa | 260 to 320 | |
| 160 |
| Tensile Strength: Yield (Proof), MPa | 220 to 250 | |
| 130 |
Thermal Properties
| Latent Heat of Fusion, J/g | 380 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 170 |
| Melting Completion (Liquidus), °C | 630 | |
| 650 |
| Melting Onset (Solidus), °C | 580 | |
| 640 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 900 |
| Thermal Conductivity, W/m-K | 150 | |
| 220 |
| Thermal Expansion, µm/m-K | 24 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 35 | |
| 56 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 110 | |
| 180 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 9.0 |
| Density, g/cm3 | 3.0 | |
| 2.8 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 8.1 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1140 | |
| 1180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 16 to 25 | |
| 3.4 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 350 to 430 | |
| 130 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 46 | |
| 49 |
| Strength to Weight: Axial, points | 25 to 31 | |
| 16 |
| Strength to Weight: Bending, points | 31 to 36 | |
| 23 |
| Thermal Diffusivity, mm2/s | 58 | |
| 88 |
| Thermal Shock Resistance, points | 11 to 14 | |
| 7.0 |
Alloy Composition
| Aluminum (Al), % | 91.2 to 93.2 | |
| 98 to 98.8 |
| Chromium (Cr), % | 0.060 to 0.2 | |
| 0 |
| Copper (Cu), % | 0 to 0.1 | |
| 0 to 0.050 |
| Iron (Fe), % | 0 to 0.15 | |
| 1.2 to 1.7 |
| Magnesium (Mg), % | 0.6 to 0.8 | |
| 0 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0 |
| Silicon (Si), % | 0 to 0.15 | |
| 0 to 0.15 |
| Titanium (Ti), % | 0.1 to 0.2 | |
| 0 |
| Zinc (Zn), % | 6.0 to 7.0 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.15 |