R30012 Cobalt vs. ASTM A572 Steel
R30012 cobalt belongs to the cobalt alloys classification, while ASTM A572 steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is R30012 cobalt and the bottom bar is ASTM A572 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 190 |
| Elongation at Break, % | 1.0 | |
| 18 to 25 |
| Fatigue Strength, MPa | 320 | |
| 240 to 340 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 86 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 830 | |
| 470 to 620 |
| Tensile Strength: Yield (Proof), MPa | 650 | |
| 330 to 510 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 250 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1460 |
| Melting Onset (Solidus), °C | 1280 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 51 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.8 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.8 | |
| 8.2 to 8.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 8.3 | |
| 1.6 |
| Embodied Energy, MJ/kg | 120 | |
| 22 |
| Embodied Water, L/kg | 480 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 7.7 | |
| 100 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 960 | |
| 290 to 690 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 26 | |
| 17 to 22 |
| Strength to Weight: Bending, points | 22 | |
| 17 to 21 |
| Thermal Diffusivity, mm2/s | 3.8 | |
| 14 |
| Thermal Shock Resistance, points | 23 | |
| 14 to 18 |