7049 Aluminum vs. EV31A Magnesium
7049 aluminum belongs to the aluminum alloys classification, while EV31A magnesium belongs to the magnesium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is 7049 aluminum and the bottom bar is EV31A magnesium.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 | |
| 70 |
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 44 |
| Elongation at Break, % | 6.2 to 7.0 | |
| 3.5 |
| Fatigue Strength, MPa | 160 to 170 | |
| 120 |
| Poisson's Ratio | 0.32 | |
| 0.27 |
| Shear Modulus, GPa | 27 | |
| 17 |
| Shear Strength, MPa | 300 to 310 | |
| 170 |
| Tensile Strength: Ultimate (UTS), MPa | 510 to 530 | |
| 260 |
| Tensile Strength: Yield (Proof), MPa | 420 to 450 | |
| 170 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 180 | |
| 200 |
| Melting Onset (Solidus), °C | 480 | |
| 590 |
| Specific Heat Capacity, J/kg-K | 860 | |
| 1000 |
| Thermal Conductivity, W/m-K | 130 | |
| 86 |
| Thermal Expansion, µm/m-K | 23 | |
| 27 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 36 | |
| 18 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 110 | |
| 90 |
Otherwise Unclassified Properties
| Density, g/cm3 | 3.1 | |
| 1.8 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 to 34 | |
| 8.1 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1270 to 1440 | |
| 330 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 45 | |
| 65 |
| Strength to Weight: Axial, points | 46 to 47 | |
| 40 |
| Strength to Weight: Bending, points | 46 to 47 | |
| 50 |
| Thermal Diffusivity, mm2/s | 51 | |
| 47 |
| Thermal Shock Resistance, points | 22 to 23 | |
| 16 |