5021 Aluminum vs. 5449 Aluminum
Both 5021 aluminum and 5449 aluminum are aluminum alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is 5021 aluminum and the bottom bar is 5449 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 68 | |
| 69 |
| Elongation at Break, % | 1.1 to 3.4 | |
| 4.0 to 17 |
| Fatigue Strength, MPa | 85 to 110 | |
| 78 to 120 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 26 | |
| 26 |
| Shear Strength, MPa | 170 | |
| 130 to 190 |
| Tensile Strength: Ultimate (UTS), MPa | 300 to 310 | |
| 210 to 330 |
| Tensile Strength: Yield (Proof), MPa | 240 to 270 | |
| 91 to 260 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 190 |
| Melting Completion (Liquidus), °C | 640 | |
| 650 |
| Melting Onset (Solidus), °C | 590 | |
| 590 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 900 |
| Thermal Conductivity, W/m-K | 140 | |
| 140 |
| Thermal Expansion, µm/m-K | 23 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 35 | |
| 35 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 120 | |
| 110 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 9.5 |
| Density, g/cm3 | 2.7 | |
| 2.8 |
| Embodied Carbon, kg CO2/kg material | 8.6 | |
| 8.5 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1180 | |
| 1180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 3.1 to 10 | |
| 12 to 29 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 440 to 550 | |
| 60 to 480 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 50 | |
| 50 |
| Strength to Weight: Axial, points | 30 to 32 | |
| 22 to 33 |
| Strength to Weight: Bending, points | 37 | |
| 29 to 39 |
| Thermal Diffusivity, mm2/s | 57 | |
| 56 |
| Thermal Shock Resistance, points | 13 to 14 | |
| 9.4 to 15 |
Alloy Composition
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| Aluminum (Al), % | 95.2 to 97.7 | |
| 94.1 to 97.8 |
| Chromium (Cr), % | 0 to 0.15 | |
| 0 to 0.3 |
| Copper (Cu), % | 0 to 0.15 | |
| 0 to 0.3 |
| Iron (Fe), % | 0 to 0.5 | |
| 0 to 0.7 |
| Magnesium (Mg), % | 2.2 to 2.8 | |
| 1.6 to 2.6 |
| Manganese (Mn), % | 0.1 to 0.5 | |
| 0.6 to 1.1 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.4 |
| Titanium (Ti), % | 0 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0 to 0.15 | |
| 0 to 0.3 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |