R30816 Cobalt vs. ASTM A414 Steel
R30816 cobalt belongs to the cobalt alloys classification, while ASTM A414 steel belongs to the iron alloys. There are 26 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 R30816 cobalt and the bottom bar is ASTM A414 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 280 | |
| 110 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 23 | |
| 15 to 26 |
| Fatigue Strength, MPa | 250 | |
| 140 to 260 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Shear Modulus, GPa | 81 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 1020 | |
| 360 to 590 |
| Tensile Strength: Yield (Proof), MPa | 460 | |
| 190 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 250 |
| Melting Completion (Liquidus), °C | 1540 | |
| 1460 |
| Melting Onset (Solidus), °C | 1460 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 420 | |
| 470 |
| Thermal Conductivity, W/m-K | 13 | |
| 49 to 50 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.1 | |
| 7.8 to 7.9 |
| Embodied Carbon, kg CO2/kg material | 20 | |
| 1.5 to 1.6 |
| Embodied Energy, MJ/kg | 320 | |
| 20 to 22 |
| Embodied Water, L/kg | 440 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 | |
| 69 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 510 | |
| 100 to 330 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 22 | |
| 24 |
| Strength to Weight: Axial, points | 31 | |
| 13 to 21 |
| Strength to Weight: Bending, points | 25 | |
| 14 to 20 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 13 |
| Thermal Shock Resistance, points | 28 | |
| 11 to 17 |