8021 Aluminum vs. 5040 Aluminum
Both 8021 aluminum and 5040 aluminum are aluminum alloys. They have a very high 97% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is 8021 aluminum and the bottom bar is 5040 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 70 |
| Elongation at Break, % | 2.3 | |
| 5.7 to 6.8 |
| Fatigue Strength, MPa | 61 | |
| 100 to 130 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 26 | |
| 26 |
| Tensile Strength: Ultimate (UTS), MPa | 160 | |
| 240 to 260 |
| Tensile Strength: Yield (Proof), MPa | 130 | |
| 190 to 230 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 190 |
| Melting Completion (Liquidus), °C | 650 | |
| 650 |
| Melting Onset (Solidus), °C | 640 | |
| 600 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 900 |
| Thermal Conductivity, W/m-K | 220 | |
| 160 |
| Thermal Expansion, µm/m-K | 23 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 56 | |
| 41 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 180 | |
| 130 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 9.5 |
| Density, g/cm3 | 2.8 | |
| 2.8 |
| Embodied Carbon, kg CO2/kg material | 8.1 | |
| 8.3 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1180 | |
| 1180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 3.4 | |
| 14 to 15 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 | |
| 260 to 380 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 49 | |
| 50 |
| Strength to Weight: Axial, points | 16 | |
| 24 to 26 |
| Strength to Weight: Bending, points | 23 | |
| 31 to 32 |
| Thermal Diffusivity, mm2/s | 88 | |
| 64 |
| Thermal Shock Resistance, points | 7.0 | |
| 10 to 11 |
Alloy Composition
| Aluminum (Al), % | 98 to 98.8 | |
| 95.2 to 98 |
| Chromium (Cr), % | 0 | |
| 0.1 to 0.3 |
| Copper (Cu), % | 0 to 0.050 | |
| 0 to 0.25 |
| Iron (Fe), % | 1.2 to 1.7 | |
| 0 to 0.7 |
| Magnesium (Mg), % | 0 | |
| 1.0 to 1.5 |
| Manganese (Mn), % | 0 | |
| 0.9 to 1.4 |
| Silicon (Si), % | 0 to 0.15 | |
| 0 to 0.3 |
| Zinc (Zn), % | 0 | |
| 0 to 0.25 |
| Residuals, % | 0 | |
| 0 to 0.15 |