R30035 Cobalt vs. Grade 20 Titanium
R30035 cobalt belongs to the cobalt alloys classification, while grade 20 titanium belongs to the titanium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is R30035 cobalt and the bottom bar is grade 20 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 to 230 | |
| 120 |
| Elongation at Break, % | 9.0 to 46 | |
| 5.7 to 17 |
| Fatigue Strength, MPa | 170 to 740 | |
| 550 to 630 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Reduction in Area, % | 40 to 74 | |
| 23 |
| Shear Modulus, GPa | 84 to 89 | |
| 47 |
| Tensile Strength: Ultimate (UTS), MPa | 900 to 1900 | |
| 900 to 1270 |
| Tensile Strength: Yield (Proof), MPa | 300 to 1650 | |
| 850 to 1190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 400 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1660 |
| Melting Onset (Solidus), °C | 1320 | |
| 1600 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 520 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.7 | |
| 5.0 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 52 |
| Embodied Energy, MJ/kg | 140 | |
| 860 |
| Embodied Water, L/kg | 410 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 160 to 320 | |
| 71 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 210 to 5920 | |
| 2940 to 5760 |
| Stiffness to Weight: Axial, points | 14 to 15 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 to 24 | |
| 33 |
| Strength to Weight: Axial, points | 29 to 61 | |
| 50 to 70 |
| Strength to Weight: Bending, points | 24 to 39 | |
| 41 to 52 |
| Thermal Shock Resistance, points | 23 to 46 | |
| 55 to 77 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 3.0 to 4.0 |
| Boron (B), % | 0 to 0.015 | |
| 0 |
| Carbon (C), % | 0 to 0.025 | |
| 0 to 0.050 |
| Chromium (Cr), % | 19 to 21 | |
| 5.5 to 6.5 |
| Cobalt (Co), % | 29.1 to 39 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.020 |
| Iron (Fe), % | 0 to 1.0 | |
| 0 to 0.3 |
| Manganese (Mn), % | 0 to 0.15 | |
| 0 |
| Molybdenum (Mo), % | 9.0 to 10.5 | |
| 3.5 to 4.5 |
| Nickel (Ni), % | 33 to 37 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.12 |
| Palladium (Pd), % | 0 | |
| 0.040 to 0.080 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 |
| Silicon (Si), % | 0 to 0.15 | |
| 0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 |
| Titanium (Ti), % | 0 to 1.0 | |
| 71 to 77 |
| Vanadium (V), % | 0 | |
| 7.5 to 8.5 |
| Zirconium (Zr), % | 0 | |
| 3.5 to 4.5 |
| Residuals, % | 0 | |
| 0 to 0.4 |