2011 Aluminum vs. 2011A Aluminum
Both 2011 aluminum and 2011A aluminum are aluminum alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is 2011 aluminum and the bottom bar is 2011A aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 71 | |
| 70 |
| Elongation at Break, % | 8.5 to 18 | |
| 6.8 to 16 |
| Fatigue Strength, MPa | 74 to 120 | |
| 75 to 100 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 27 | |
| 26 |
| Shear Strength, MPa | 190 to 250 | |
| 190 to 250 |
| Tensile Strength: Ultimate (UTS), MPa | 310 to 420 | |
| 310 to 410 |
| Tensile Strength: Yield (Proof), MPa | 140 to 310 | |
| 140 to 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 390 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 190 | |
| 190 |
| Melting Completion (Liquidus), °C | 640 | |
| 660 |
| Melting Onset (Solidus), °C | 540 | |
| 550 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 870 |
| Thermal Conductivity, W/m-K | 140 to 170 | |
| 130 |
| Thermal Expansion, µm/m-K | 23 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 35 to 45 | |
| 33 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 100 to 130 | |
| 96 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 11 |
| Density, g/cm3 | 3.1 | |
| 3.1 |
| Embodied Carbon, kg CO2/kg material | 7.9 | |
| 7.9 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1150 | |
| 1150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 29 to 52 | |
| 20 to 40 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 680 | |
| 140 to 670 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 44 | |
| 44 |
| Strength to Weight: Axial, points | 27 to 37 | |
| 28 to 37 |
| Strength to Weight: Bending, points | 32 to 40 | |
| 33 to 40 |
| Thermal Diffusivity, mm2/s | 51 to 64 | |
| 49 |
| Thermal Shock Resistance, points | 14 to 19 | |
| 14 to 18 |
Alloy Composition
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| Aluminum (Al), % | 91.3 to 94.6 | |
| 91.5 to 95.1 |
| Bismuth (Bi), % | 0.2 to 0.6 | |
| 0.2 to 0.6 |
| Copper (Cu), % | 5.0 to 6.0 | |
| 4.5 to 6.0 |
| Iron (Fe), % | 0 to 0.7 | |
| 0 to 0.5 |
| Lead (Pb), % | 0.2 to 0.6 | |
| 0.2 to 0.6 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.4 |
| Zinc (Zn), % | 0 to 0.3 | |
| 0 to 0.3 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |