R30008 Cobalt vs. Austenitic Nodular Cast Iron
R30008 cobalt belongs to the cobalt alloys classification, while austenitic nodular cast iron belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is R30008 cobalt and the bottom bar is austenitic nodular cast iron.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 180 to 190 |
| Elongation at Break, % | 1.1 to 73 | |
| 6.8 to 34 |
| Poisson's Ratio | 0.29 | |
| 0.29 to 0.3 |
| Shear Modulus, GPa | 83 | |
| 70 to 72 |
| Tensile Strength: Ultimate (UTS), MPa | 950 to 1700 | |
| 430 to 500 |
| Tensile Strength: Yield (Proof), MPa | 500 to 1080 | |
| 190 to 240 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 280 to 350 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1340 to 1400 |
| Melting Onset (Solidus), °C | 1330 | |
| 1300 to 1360 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 470 to 490 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 to 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 95 | |
| 16 to 25 |
| Density, g/cm3 | 8.4 | |
| 7.7 to 8.0 |
| Embodied Carbon, kg CO2/kg material | 8.1 | |
| 3.5 to 4.9 |
| Embodied Energy, MJ/kg | 110 | |
| 48 to 68 |
| Embodied Water, L/kg | 400 | |
| 91 to 120 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 590 to 2720 | |
| 98 to 160 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 to 25 |
| Strength to Weight: Axial, points | 31 to 56 | |
| 15 to 18 |
| Strength to Weight: Bending, points | 25 to 37 | |
| 16 to 18 |
| Thermal Shock Resistance, points | 25 to 44 | |
| 12 to 15 |