2218 Aluminum vs. 242.0 Aluminum
Both 2218 aluminum and 242.0 aluminum are aluminum alloys. Their average alloy composition is basically identical. There are 31 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 2218 aluminum and the bottom bar is 242.0 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 95 to 110 | |
| 70 to 110 |
| Elastic (Young's, Tensile) Modulus, GPa | 73 | |
| 73 |
| Elongation at Break, % | 6.8 to 10 | |
| 0.5 to 1.5 |
| Fatigue Strength, MPa | 110 | |
| 55 to 110 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 27 | |
| 27 |
| Shear Strength, MPa | 210 to 250 | |
| 150 to 240 |
| Tensile Strength: Ultimate (UTS), MPa | 330 to 430 | |
| 180 to 290 |
| Tensile Strength: Yield (Proof), MPa | 260 to 310 | |
| 120 to 220 |
Thermal Properties
| Latent Heat of Fusion, J/g | 390 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 220 | |
| 210 |
| Melting Completion (Liquidus), °C | 640 | |
| 640 |
| Melting Onset (Solidus), °C | 510 | |
| 530 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 870 |
| Thermal Conductivity, W/m-K | 140 | |
| 130 to 170 |
| Thermal Expansion, µm/m-K | 22 | |
| 22 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 37 | |
| 33 to 44 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 110 | |
| 96 to 130 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 12 |
| Density, g/cm3 | 3.1 | |
| 3.1 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 8.3 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1130 | |
| 1130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 27 to 31 | |
| 1.3 to 3.4 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 450 to 650 | |
| 110 to 340 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 45 | |
| 45 |
| Strength to Weight: Axial, points | 30 to 39 | |
| 16 to 26 |
| Strength to Weight: Bending, points | 34 to 41 | |
| 23 to 32 |
| Thermal Diffusivity, mm2/s | 52 | |
| 50 to 62 |
| Thermal Shock Resistance, points | 15 to 19 | |
| 8.0 to 13 |
Alloy Composition
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| Aluminum (Al), % | 88.8 to 93.6 | |
| 88.4 to 93.6 |
| Chromium (Cr), % | 0 to 0.1 | |
| 0 to 0.25 |
| Copper (Cu), % | 3.5 to 4.5 | |
| 3.5 to 4.5 |
| Iron (Fe), % | 0 to 1.0 | |
| 0 to 1.0 |
| Magnesium (Mg), % | 1.2 to 1.8 | |
| 1.2 to 1.8 |
| Manganese (Mn), % | 0 to 0.2 | |
| 0 to 0.35 |
| Nickel (Ni), % | 1.7 to 2.3 | |
| 1.7 to 2.3 |
| Silicon (Si), % | 0 to 0.9 | |
| 0 to 0.7 |
| Titanium (Ti), % | 0 | |
| 0 to 0.25 |
| Zinc (Zn), % | 0 to 0.25 | |
| 0 to 0.35 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |