EV31A Magnesium vs. 705.0 Aluminum
EV31A magnesium belongs to the magnesium alloys classification, while 705.0 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is EV31A magnesium and the bottom bar is 705.0 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 70 | |
| 62 to 65 |
| Elastic (Young's, Tensile) Modulus, GPa | 44 | |
| 69 |
| Elongation at Break, % | 3.5 | |
| 8.4 to 10 |
| Fatigue Strength, MPa | 120 | |
| 63 to 98 |
| Poisson's Ratio | 0.27 | |
| 0.33 |
| Shear Modulus, GPa | 17 | |
| 26 |
| Tensile Strength: Ultimate (UTS), MPa | 260 | |
| 240 to 260 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 130 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 200 | |
| 180 |
| Melting Onset (Solidus), °C | 590 | |
| 610 |
| Specific Heat Capacity, J/kg-K | 1000 | |
| 890 |
| Thermal Conductivity, W/m-K | 86 | |
| 140 |
| Thermal Expansion, µm/m-K | 27 | |
| 24 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 18 | |
| 34 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 90 | |
| 110 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.8 | |
| 2.8 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 8.1 | |
| 18 to 20 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 330 | |
| 120 to 130 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 65 | |
| 49 |
| Strength to Weight: Axial, points | 40 | |
| 24 to 26 |
| Strength to Weight: Bending, points | 50 | |
| 31 to 32 |
| Thermal Diffusivity, mm2/s | 47 | |
| 55 |
| Thermal Shock Resistance, points | 16 | |
| 11 |