5251 Aluminum vs. 7049A Aluminum
Both 5251 aluminum and 7049A aluminum are aluminum alloys. They have a moderately high 90% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is 5251 aluminum and the bottom bar is 7049A aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 68 | |
| 71 |
| Elongation at Break, % | 2.0 to 19 | |
| 5.0 to 5.7 |
| Fatigue Strength, MPa | 59 to 110 | |
| 180 |
| Poisson's Ratio | 0.33 | |
| 0.32 |
| Shear Modulus, GPa | 26 | |
| 27 |
| Shear Strength, MPa | 110 to 160 | |
| 340 to 350 |
| Tensile Strength: Ultimate (UTS), MPa | 180 to 280 | |
| 580 to 590 |
| Tensile Strength: Yield (Proof), MPa | 67 to 250 | |
| 500 to 530 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 370 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 200 |
| Melting Completion (Liquidus), °C | 650 | |
| 640 |
| Melting Onset (Solidus), °C | 610 | |
| 430 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 850 |
| Thermal Conductivity, W/m-K | 150 | |
| 130 |
| Thermal Expansion, µm/m-K | 24 | |
| 24 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 37 | |
| 40 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 120 | |
| 120 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 10 |
| Density, g/cm3 | 2.7 | |
| 3.1 |
| Embodied Carbon, kg CO2/kg material | 8.5 | |
| 8.2 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1180 | |
| 1100 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 5.4 to 27 | |
| 28 to 32 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 33 to 450 | |
| 1800 to 1990 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 50 | |
| 44 |
| Strength to Weight: Axial, points | 18 to 29 | |
| 52 to 53 |
| Strength to Weight: Bending, points | 26 to 35 | |
| 50 to 51 |
| Thermal Diffusivity, mm2/s | 61 | |
| 50 |
| Thermal Shock Resistance, points | 7.9 to 13 | |
| 25 |
Alloy Composition
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| Aluminum (Al), % | 95.5 to 98.2 | |
| 84.6 to 89.5 |
| Chromium (Cr), % | 0 to 0.15 | |
| 0.050 to 0.25 |
| Copper (Cu), % | 0 to 0.15 | |
| 1.2 to 1.9 |
| Iron (Fe), % | 0 to 0.5 | |
| 0 to 0.5 |
| Magnesium (Mg), % | 1.7 to 2.4 | |
| 2.1 to 3.1 |
| Manganese (Mn), % | 0.1 to 0.5 | |
| 0 to 0.5 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.4 |
| Titanium (Ti), % | 0 to 0.15 | |
| 0 to 0.25 |
| Zinc (Zn), % | 0 to 0.15 | |
| 7.2 to 8.4 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.25 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |