4015 Aluminum vs. 4115 Aluminum
Both 4015 aluminum and 4115 aluminum are aluminum alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is 4015 aluminum and the bottom bar is 4115 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 35 to 70 | |
| 38 to 68 |
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 70 |
| Elongation at Break, % | 1.1 to 23 | |
| 1.1 to 11 |
| Fatigue Strength, MPa | 46 to 71 | |
| 39 to 76 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 26 | |
| 26 |
| Shear Strength, MPa | 82 to 120 | |
| 71 to 130 |
| Tensile Strength: Ultimate (UTS), MPa | 130 to 220 | |
| 120 to 220 |
| Tensile Strength: Yield (Proof), MPa | 50 to 200 | |
| 39 to 190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 420 | |
| 420 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 160 |
| Melting Completion (Liquidus), °C | 640 | |
| 640 |
| Melting Onset (Solidus), °C | 600 | |
| 590 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 900 |
| Thermal Conductivity, W/m-K | 160 | |
| 160 |
| Thermal Expansion, µm/m-K | 23 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 41 | |
| 41 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 130 | |
| 140 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 9.5 |
| Density, g/cm3 | 2.7 | |
| 2.7 |
| Embodied Carbon, kg CO2/kg material | 8.1 | |
| 8.1 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1160 | |
| 1160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 2.4 to 24 | |
| 2.1 to 10 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 18 to 290 | |
| 11 to 270 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 50 | |
| 50 |
| Strength to Weight: Axial, points | 13 to 22 | |
| 12 to 23 |
| Strength to Weight: Bending, points | 21 to 30 | |
| 20 to 30 |
| Thermal Diffusivity, mm2/s | 66 | |
| 66 |
| Thermal Shock Resistance, points | 5.7 to 9.7 | |
| 5.2 to 9.9 |
Alloy Composition
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| Aluminum (Al), % | 94.9 to 97.9 | |
| 94.6 to 97.4 |
| Copper (Cu), % | 0 to 0.2 | |
| 0.1 to 0.5 |
| Iron (Fe), % | 0 to 0.7 | |
| 0 to 0.7 |
| Magnesium (Mg), % | 0.1 to 0.5 | |
| 0.1 to 0.5 |
| Manganese (Mn), % | 0.6 to 1.2 | |
| 0.6 to 1.2 |
| Silicon (Si), % | 1.4 to 2.2 | |
| 1.8 to 2.2 |
| Zinc (Zn), % | 0 to 0.2 | |
| 0 to 0.2 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |