2218-T61 Aluminum vs. 242.0-T61 Aluminum
Both 2218-T61 aluminum and 242.0-T61 aluminum are aluminum alloys. Both are furnished in the T61 temper. 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-T61 aluminum and the bottom bar is 242.0-T61 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 110 | |
| 110 |
| Elastic (Young's, Tensile) Modulus, GPa | 73 | |
| 73 |
| Elongation at Break, % | 6.8 | |
| 0.5 |
| Fatigue Strength, MPa | 110 | |
| 65 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 27 | |
| 27 |
| Shear Strength, MPa | 250 | |
| 240 |
| Tensile Strength: Ultimate (UTS), MPa | 430 | |
| 290 |
| Tensile Strength: Yield (Proof), MPa | 310 | |
| 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 |
| Thermal Expansion, µm/m-K | 22 | |
| 22 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 37 | |
| 33 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 110 | |
| 96 |
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 | |
| 1.3 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 650 | |
| 340 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 45 | |
| 45 |
| Strength to Weight: Axial, points | 39 | |
| 26 |
| Strength to Weight: Bending, points | 41 | |
| 32 |
| Thermal Diffusivity, mm2/s | 52 | |
| 50 |
| Thermal Shock Resistance, points | 19 | |
| 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 |