R30003 Cobalt vs. Grade 363 Molybdenum
R30003 cobalt belongs to the cobalt alloys classification, while grade 363 molybdenum belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is R30003 cobalt and the bottom bar is grade 363 molybdenum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 310 |
| Elongation at Break, % | 10 to 73 | |
| 6.2 to 11 |
| Poisson's Ratio | 0.29 | |
| 0.31 |
| Shear Modulus, GPa | 83 | |
| 120 |
| Tensile Strength: Ultimate (UTS), MPa | 970 to 1720 | |
| 580 to 720 |
| Tensile Strength: Yield (Proof), MPa | 510 to 1090 | |
| 350 to 620 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 370 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 250 |
| Thermal Expansion, µm/m-K | 13 | |
| 7.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 10 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 28 |
| Embodied Energy, MJ/kg | 110 | |
| 330 |
| Embodied Water, L/kg | 400 | |
| 360 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 600 to 2790 | |
| 200 to 630 |
| Stiffness to Weight: Axial, points | 14 | |
| 17 |
| Stiffness to Weight: Bending, points | 24 | |
| 22 |
| Strength to Weight: Axial, points | 32 to 57 | |
| 16 to 20 |
| Strength to Weight: Bending, points | 26 to 38 | |
| 15 to 17 |
| Thermal Shock Resistance, points | 26 to 45 | |
| 19 to 24 |
Alloy Composition
| Boron (B), % | 0 to 0.1 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 0.010 to 0.030 |
| Chromium (Cr), % | 19 to 21 | |
| 0 |
| Cobalt (Co), % | 39 to 41 | |
| 0 |
| Iron (Fe), % | 10 to 20.5 | |
| 0 to 0.010 |
| Manganese (Mn), % | 1.5 to 2.5 | |
| 0 |
| Molybdenum (Mo), % | 6.0 to 8.0 | |
| 99.3 to 99.5 |
| Nickel (Ni), % | 14 to 16 | |
| 0 to 0.0020 |
| Nitrogen (N), % | 0 | |
| 0 to 0.0020 |
| Oxygen (O), % | 0 | |
| 0 to 0.0030 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 |
| Silicon (Si), % | 0 to 1.2 | |
| 0 to 0.010 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0.4 to 0.55 |
| Zirconium (Zr), % | 0 | |
| 0.060 to 0.12 |