7178 Aluminum vs. EN AC-42100 Aluminum
Both 7178 aluminum and EN AC-42100 aluminum are aluminum alloys. They have 88% of their average alloy composition in common. There are 29 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 7178 aluminum and the bottom bar is EN AC-42100 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 71 | |
| 70 |
| Elongation at Break, % | 4.5 to 12 | |
| 3.4 to 9.0 |
| Fatigue Strength, MPa | 120 to 210 | |
| 76 to 82 |
| Poisson's Ratio | 0.32 | |
| 0.33 |
| Shear Modulus, GPa | 27 | |
| 26 |
| Tensile Strength: Ultimate (UTS), MPa | 240 to 640 | |
| 280 to 290 |
| Tensile Strength: Yield (Proof), MPa | 120 to 560 | |
| 210 to 230 |
Thermal Properties
| Latent Heat of Fusion, J/g | 370 | |
| 500 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 170 |
| Melting Completion (Liquidus), °C | 630 | |
| 610 |
| Melting Onset (Solidus), °C | 480 | |
| 600 |
| Specific Heat Capacity, J/kg-K | 860 | |
| 910 |
| Thermal Conductivity, W/m-K | 130 | |
| 150 |
| Thermal Expansion, µm/m-K | 23 | |
| 22 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 31 | |
| 41 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 91 | |
| 140 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 9.5 |
| Density, g/cm3 | 3.1 | |
| 2.6 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 8.0 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1110 | |
| 1110 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 24 to 52 | |
| 9.1 to 23 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 to 2220 | |
| 300 to 370 |
| Stiffness to Weight: Axial, points | 13 | |
| 15 |
| Stiffness to Weight: Bending, points | 45 | |
| 53 |
| Strength to Weight: Axial, points | 21 to 58 | |
| 30 to 31 |
| Strength to Weight: Bending, points | 28 to 54 | |
| 37 to 38 |
| Thermal Diffusivity, mm2/s | 47 | |
| 66 |
| Thermal Shock Resistance, points | 10 to 28 | |
| 13 |
Alloy Composition
| Aluminum (Al), % | 85.4 to 89.5 | |
| 91.3 to 93.3 |
| Chromium (Cr), % | 0.18 to 0.28 | |
| 0 |
| Copper (Cu), % | 1.6 to 2.4 | |
| 0 to 0.050 |
| Iron (Fe), % | 0 to 0.5 | |
| 0 to 0.19 |
| Magnesium (Mg), % | 2.4 to 3.1 | |
| 0.25 to 0.45 |
| Manganese (Mn), % | 0 to 0.3 | |
| 0 to 0.1 |
| Silicon (Si), % | 0 to 0.4 | |
| 6.5 to 7.5 |
| Titanium (Ti), % | 0 to 0.2 | |
| 0 to 0.25 |
| Zinc (Zn), % | 6.3 to 7.3 | |
| 0 to 0.070 |
| Residuals, % | 0 | |
| 0 to 0.1 |