R30816 Cobalt vs. ASTM A202 Steel
R30816 cobalt belongs to the cobalt alloys classification, while ASTM A202 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 A202 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 280 | |
| 180 to 200 |
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 23 | |
| 17 to 18 |
| Fatigue Strength, MPa | 250 | |
| 240 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Shear Modulus, GPa | 81 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 1020 | |
| 590 to 670 |
| Tensile Strength: Yield (Proof), MPa | 460 | |
| 350 to 360 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 260 |
| Melting Completion (Liquidus), °C | 1540 | |
| 1450 |
| Melting Onset (Solidus), °C | 1460 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 420 | |
| 470 |
| Thermal Conductivity, W/m-K | 13 | |
| 52 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.1 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 20 | |
| 1.4 |
| Embodied Energy, MJ/kg | 320 | |
| 19 |
| Embodied Water, L/kg | 440 | |
| 49 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 | |
| 93 to 96 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 510 | |
| 330 to 350 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 22 | |
| 24 |
| Strength to Weight: Axial, points | 31 | |
| 21 to 24 |
| Strength to Weight: Bending, points | 25 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 14 |
| Thermal Shock Resistance, points | 28 | |
| 17 to 20 |