R30008 Cobalt vs. Grade 200 Maraging Steel
R30008 cobalt belongs to the cobalt alloys classification, while grade 200 maraging steel belongs to the iron alloys. They have 42% of their average alloy composition in common. There are 22 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 R30008 cobalt and the bottom bar is grade 200 maraging steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 1.1 to 73 | |
| 9.1 to 18 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 83 | |
| 74 |
| Tensile Strength: Ultimate (UTS), MPa | 950 to 1700 | |
| 970 to 1500 |
| Tensile Strength: Yield (Proof), MPa | 500 to 1080 | |
| 690 to 1490 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 260 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1460 |
| Melting Onset (Solidus), °C | 1330 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 460 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 95 | |
| 31 |
| Density, g/cm3 | 8.4 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 8.1 | |
| 4.5 |
| Embodied Energy, MJ/kg | 110 | |
| 59 |
| Embodied Water, L/kg | 400 | |
| 140 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 590 to 2720 | |
| 1240 to 5740 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 31 to 56 | |
| 33 to 51 |
| Strength to Weight: Bending, points | 25 to 37 | |
| 27 to 35 |
| Thermal Shock Resistance, points | 25 to 44 | |
| 29 to 45 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.050 to 0.15 |
| Boron (B), % | 0 to 0.0010 | |
| 0 to 0.0030 |
| Calcium (Ca), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 0 to 0.15 | |
| 0 to 0.030 |
| Chromium (Cr), % | 18.5 to 21.5 | |
| 0 |
| Cobalt (Co), % | 39 to 42 | |
| 8.0 to 9.0 |
| Iron (Fe), % | 7.6 to 20 | |
| 67.8 to 71.8 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 6.5 to 7.5 | |
| 3.0 to 3.5 |
| Nickel (Ni), % | 15 to 18 | |
| 17 to 19 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 to 1.2 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 | |
| 0.15 to 0.25 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.020 |