R30155 Cobalt vs. R05252 Alloy
R30155 cobalt belongs to the iron alloys classification, while R05252 alloy belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is R30155 cobalt and the bottom bar is R05252 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 200 |
| Elongation at Break, % | 34 | |
| 23 |
| Poisson's Ratio | 0.29 | |
| 0.33 |
| Shear Modulus, GPa | 81 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 850 | |
| 310 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 220 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 140 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 140 |
| Thermal Expansion, µm/m-K | 14 | |
| 6.7 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.5 | |
| 17 |
| Embodied Water, L/kg | 300 | |
| 600 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 230 | |
| 63 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 370 | |
| 120 |
| Stiffness to Weight: Axial, points | 14 | |
| 6.5 |
| Stiffness to Weight: Bending, points | 23 | |
| 12 |
| Strength to Weight: Axial, points | 28 | |
| 5.2 |
| Strength to Weight: Bending, points | 24 | |
| 6.1 |
| Thermal Shock Resistance, points | 21 | |
| 17 |
Alloy Composition
| Carbon (C), % | 0.080 to 0.16 | |
| 0 to 0.010 |
| Chromium (Cr), % | 20 to 22.5 | |
| 0 |
| Cobalt (Co), % | 18.5 to 21 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 24.3 to 36.2 | |
| 0 to 0.010 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 |
| Molybdenum (Mo), % | 2.5 to 3.5 | |
| 0 to 0.020 |
| Nickel (Ni), % | 19 to 21 | |
| 0 to 0.010 |
| Niobium (Nb), % | 0.75 to 1.3 | |
| 0 to 0.1 |
| Nitrogen (N), % | 0 to 0.2 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.015 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tantalum (Ta), % | 0.75 to 1.3 | |
| 88.8 to 91 |
| Titanium (Ti), % | 0 | |
| 0 to 0.010 |
| Tungsten (W), % | 2.0 to 3.0 | |
| 9.0 to 11 |