5251 Aluminum vs. ISO-WD32260 Magnesium
5251 aluminum belongs to the aluminum alloys classification, while ISO-WD32260 magnesium belongs to the magnesium alloys. 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 ISO-WD32260 magnesium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 68 | |
| 46 |
| Elongation at Break, % | 2.0 to 19 | |
| 4.5 to 6.0 |
| Fatigue Strength, MPa | 59 to 110 | |
| 150 to 190 |
| Poisson's Ratio | 0.33 | |
| 0.29 |
| Shear Modulus, GPa | 26 | |
| 18 |
| Shear Strength, MPa | 110 to 160 | |
| 190 to 200 |
| Tensile Strength: Ultimate (UTS), MPa | 180 to 280 | |
| 330 to 340 |
| Tensile Strength: Yield (Proof), MPa | 67 to 250 | |
| 230 to 250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 330 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 120 |
| Melting Completion (Liquidus), °C | 650 | |
| 600 |
| Melting Onset (Solidus), °C | 610 | |
| 520 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 970 |
| Thermal Conductivity, W/m-K | 150 | |
| 110 |
| Thermal Expansion, µm/m-K | 24 | |
| 27 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 37 | |
| 28 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 120 | |
| 140 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 13 |
| Density, g/cm3 | 2.7 | |
| 1.9 |
| Embodied Carbon, kg CO2/kg material | 8.5 | |
| 23 |
| Embodied Energy, MJ/kg | 150 | |
| 160 |
| Embodied Water, L/kg | 1180 | |
| 940 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 5.4 to 27 | |
| 14 to 19 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 33 to 450 | |
| 560 to 700 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 50 | |
| 63 |
| Strength to Weight: Axial, points | 18 to 29 | |
| 48 to 51 |
| Strength to Weight: Bending, points | 26 to 35 | |
| 56 to 58 |
| Thermal Diffusivity, mm2/s | 61 | |
| 63 |
| Thermal Shock Resistance, points | 7.9 to 13 | |
| 19 to 20 |
Alloy Composition
| Aluminum (Al), % | 95.5 to 98.2 | |
| 0 |
| Chromium (Cr), % | 0 to 0.15 | |
| 0 |
| Copper (Cu), % | 0 to 0.15 | |
| 0 |
| Iron (Fe), % | 0 to 0.5 | |
| 0 |
| Magnesium (Mg), % | 1.7 to 2.4 | |
| 92.7 to 94.8 |
| Manganese (Mn), % | 0.1 to 0.5 | |
| 0 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 |
| Titanium (Ti), % | 0 to 0.15 | |
| 0 |
| Zinc (Zn), % | 0 to 0.15 | |
| 4.8 to 6.2 |
| Zirconium (Zr), % | 0 | |
| 0.45 to 0.8 |
| Residuals, % | 0 | |
| 0 to 0.3 |