7475 Aluminum vs. 7175 Aluminum
Both 7475 aluminum and 7175 aluminum are aluminum alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is 7475 aluminum and the bottom bar is 7175 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 70 |
| Elongation at Break, % | 10 to 12 | |
| 3.8 to 5.9 |
| Fatigue Strength, MPa | 190 to 210 | |
| 150 to 180 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Shear Modulus, GPa | 26 | |
| 26 |
| Shear Strength, MPa | 320 to 350 | |
| 290 to 330 |
| Tensile Strength: Ultimate (UTS), MPa | 530 to 590 | |
| 520 to 570 |
| Tensile Strength: Yield (Proof), MPa | 440 to 520 | |
| 430 to 490 |
Thermal Properties
| Latent Heat of Fusion, J/g | 380 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 180 |
| Melting Completion (Liquidus), °C | 640 | |
| 640 |
| Melting Onset (Solidus), °C | 480 | |
| 480 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 870 |
| Thermal Conductivity, W/m-K | 140 to 160 | |
| 140 |
| Thermal Expansion, µm/m-K | 23 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 33 to 42 | |
| 33 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 98 to 120 | |
| 99 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 10 |
| Density, g/cm3 | 3.0 | |
| 3.0 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 8.2 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1130 | |
| 1130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 53 to 68 | |
| 18 to 29 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1390 to 1920 | |
| 1310 to 1730 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 46 | |
| 46 |
| Strength to Weight: Axial, points | 49 to 55 | |
| 48 to 52 |
| Strength to Weight: Bending, points | 48 to 52 | |
| 48 to 51 |
| Thermal Diffusivity, mm2/s | 53 to 63 | |
| 53 |
| Thermal Shock Resistance, points | 23 to 26 | |
| 23 to 25 |
Alloy Composition
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| Aluminum (Al), % | 88.6 to 91.6 | |
| 88 to 91.4 |
| Chromium (Cr), % | 0.18 to 0.25 | |
| 0.18 to 0.28 |
| Copper (Cu), % | 1.2 to 1.9 | |
| 1.2 to 2.0 |
| Iron (Fe), % | 0 to 0.12 | |
| 0 to 0.2 |
| Magnesium (Mg), % | 1.9 to 2.6 | |
| 2.1 to 2.9 |
| Manganese (Mn), % | 0 to 0.060 | |
| 0 to 0.1 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 to 0.15 |
| Titanium (Ti), % | 0 to 0.060 | |
| 0 to 0.1 |
| Zinc (Zn), % | 5.1 to 6.2 | |
| 5.1 to 6.1 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |