R30075 Cobalt vs. Grade 350 Maraging Steel
R30075 cobalt belongs to the cobalt alloys classification, while grade 350 maraging steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is R30075 cobalt and the bottom bar is grade 350 maraging steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 to 250 | |
| 190 |
| Elongation at Break, % | 12 | |
| 4.1 to 18 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 82 to 98 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 780 to 1280 | |
| 1140 to 2420 |
| Tensile Strength: Yield (Proof), MPa | 480 to 840 | |
| 830 to 2300 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 270 |
| Melting Completion (Liquidus), °C | 1360 | |
| 1470 |
| Melting Onset (Solidus), °C | 1290 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 450 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 8.1 | |
| 5.6 |
| Embodied Energy, MJ/kg | 110 | |
| 74 |
| Embodied Water, L/kg | 530 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 84 to 140 | |
| 98 to 190 |
| Stiffness to Weight: Axial, points | 14 to 17 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 to 25 | |
| 23 |
| Strength to Weight: Axial, points | 26 to 42 | |
| 38 to 82 |
| Strength to Weight: Bending, points | 22 to 31 | |
| 29 to 49 |
| Thermal Shock Resistance, points | 21 to 29 | |
| 35 to 74 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.1 | |
| 0.050 to 0.15 |
| Boron (B), % | 0 to 0.010 | |
| 0 to 0.0030 |
| Calcium (Ca), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 0 to 0.35 | |
| 0 to 0.030 |
| Chromium (Cr), % | 27 to 30 | |
| 0 |
| Cobalt (Co), % | 58.7 to 68 | |
| 11.5 to 12.5 |
| Iron (Fe), % | 0 to 0.75 | |
| 61.2 to 64.6 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 5.0 to 7.0 | |
| 4.6 to 5.2 |
| Nickel (Ni), % | 0 to 0.5 | |
| 18 to 19 |
| Nitrogen (N), % | 0 to 0.25 | |
| 0 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 to 0.1 | |
| 1.3 to 1.6 |
| Tungsten (W), % | 0 to 0.2 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.020 |