240.0 Aluminum vs. 238.0 Aluminum
Both 240.0 aluminum and 238.0 aluminum are aluminum alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 92% of their average alloy composition in common.
For each property being compared, the top bar is 240.0 aluminum and the bottom bar is 238.0 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 72 | |
| 76 |
| Elongation at Break, % | 1.0 | |
| 1.5 |
| Fatigue Strength, MPa | 140 | |
| 110 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 27 | |
| 28 |
| Tensile Strength: Ultimate (UTS), MPa | 240 | |
| 210 |
| Tensile Strength: Yield (Proof), MPa | 200 | |
| 170 |
Thermal Properties
| Latent Heat of Fusion, J/g | 380 | |
| 430 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 170 |
| Melting Completion (Liquidus), °C | 600 | |
| 600 |
| Melting Onset (Solidus), °C | 520 | |
| 510 |
| Specific Heat Capacity, J/kg-K | 860 | |
| 840 |
| Thermal Conductivity, W/m-K | 96 | |
| 100 |
| Thermal Expansion, µm/m-K | 22 | |
| 21 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 23 | |
| 25 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 65 | |
| 67 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 12 |
| Density, g/cm3 | 3.2 | |
| 3.4 |
| Embodied Carbon, kg CO2/kg material | 8.7 | |
| 7.4 |
| Embodied Energy, MJ/kg | 150 | |
| 140 |
| Embodied Water, L/kg | 1100 | |
| 1040 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 2.2 | |
| 2.9 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 | |
| 180 |
| Stiffness to Weight: Axial, points | 12 | |
| 12 |
| Stiffness to Weight: Bending, points | 43 | |
| 42 |
| Strength to Weight: Axial, points | 20 | |
| 17 |
| Strength to Weight: Bending, points | 26 | |
| 23 |
| Thermal Diffusivity, mm2/s | 35 | |
| 37 |
| Thermal Shock Resistance, points | 11 | |
| 9.1 |
Alloy Composition
| Aluminum (Al), % | 81.7 to 86.9 | |
| 81.9 to 84.9 |
| Copper (Cu), % | 7.0 to 9.0 | |
| 9.5 to 10.5 |
| Iron (Fe), % | 0 to 0.5 | |
| 1.0 to 1.5 |
| Magnesium (Mg), % | 5.5 to 6.5 | |
| 0 to 0.25 |
| Manganese (Mn), % | 0.3 to 0.7 | |
| 0 |
| Nickel (Ni), % | 0.3 to 0.7 | |
| 0 |
| Silicon (Si), % | 0 to 0.5 | |
| 3.6 to 4.4 |
| Titanium (Ti), % | 0 to 0.2 | |
| 0 |
| Zinc (Zn), % | 0 to 0.1 | |
| 1.0 to 1.5 |
| Residuals, % | 0 to 0.15 | |
| 0 |