7178 Aluminum vs. 242.0 Aluminum
Both 7178 aluminum and 242.0 aluminum are aluminum alloys. They have a moderately high 92% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is 7178 aluminum and the bottom bar is 242.0 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 71 | |
| 73 |
| Elongation at Break, % | 4.5 to 12 | |
| 0.5 to 1.5 |
| Fatigue Strength, MPa | 120 to 210 | |
| 55 to 110 |
| Poisson's Ratio | 0.32 | |
| 0.33 |
| Shear Modulus, GPa | 27 | |
| 27 |
| Shear Strength, MPa | 140 to 380 | |
| 150 to 240 |
| Tensile Strength: Ultimate (UTS), MPa | 240 to 640 | |
| 180 to 290 |
| Tensile Strength: Yield (Proof), MPa | 120 to 560 | |
| 120 to 220 |
Thermal Properties
| Latent Heat of Fusion, J/g | 370 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 210 |
| Melting Completion (Liquidus), °C | 630 | |
| 640 |
| Melting Onset (Solidus), °C | 480 | |
| 530 |
| Specific Heat Capacity, J/kg-K | 860 | |
| 870 |
| Thermal Conductivity, W/m-K | 130 | |
| 130 to 170 |
| Thermal Expansion, µm/m-K | 23 | |
| 22 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 31 | |
| 33 to 44 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 91 | |
| 96 to 130 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 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 | 1110 | |
| 1130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 24 to 52 | |
| 1.3 to 3.4 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 to 2220 | |
| 110 to 340 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 45 | |
| 45 |
| Strength to Weight: Axial, points | 21 to 58 | |
| 16 to 26 |
| Strength to Weight: Bending, points | 28 to 54 | |
| 23 to 32 |
| Thermal Diffusivity, mm2/s | 47 | |
| 50 to 62 |
| Thermal Shock Resistance, points | 10 to 28 | |
| 8.0 to 13 |
Alloy Composition
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| Aluminum (Al), % | 85.4 to 89.5 | |
| 88.4 to 93.6 |
| Chromium (Cr), % | 0.18 to 0.28 | |
| 0 to 0.25 |
| Copper (Cu), % | 1.6 to 2.4 | |
| 3.5 to 4.5 |
| Iron (Fe), % | 0 to 0.5 | |
| 0 to 1.0 |
| Magnesium (Mg), % | 2.4 to 3.1 | |
| 1.2 to 1.8 |
| Manganese (Mn), % | 0 to 0.3 | |
| 0 to 0.35 |
| Nickel (Ni), % | 0 | |
| 1.7 to 2.3 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.7 |
| Titanium (Ti), % | 0 to 0.2 | |
| 0 to 0.25 |
| Zinc (Zn), % | 6.3 to 7.3 | |
| 0 to 0.35 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |