EN 2.4964 Cobalt vs. EV31A Magnesium
EN 2.4964 cobalt belongs to the cobalt alloys classification, while EV31A magnesium belongs to the magnesium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is EN 2.4964 cobalt and the bottom bar is EV31A magnesium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 44 |
| Elongation at Break, % | 40 | |
| 3.5 |
| Fatigue Strength, MPa | 220 | |
| 120 |
| Poisson's Ratio | 0.29 | |
| 0.27 |
| Shear Modulus, GPa | 86 | |
| 17 |
| Tensile Strength: Ultimate (UTS), MPa | 960 | |
| 260 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 170 |
Thermal Properties
| Melting Onset (Solidus), °C | 1550 | |
| 590 |
| Specific Heat Capacity, J/kg-K | 400 | |
| 1000 |
| Thermal Conductivity, W/m-K | 15 | |
| 86 |
| Thermal Expansion, µm/m-K | 12 | |
| 27 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.9 | |
| 18 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.8 | |
| 90 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.6 | |
| 1.8 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 310 | |
| 8.1 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 340 | |
| 330 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 21 | |
| 65 |
| Strength to Weight: Axial, points | 28 | |
| 40 |
| Strength to Weight: Bending, points | 23 | |
| 50 |
| Thermal Diffusivity, mm2/s | 3.9 | |
| 47 |
| Thermal Shock Resistance, points | 25 | |
| 16 |