R30003 Cobalt vs. Grade 20 Titanium
R30003 cobalt belongs to the cobalt alloys classification, while grade 20 titanium belongs to the titanium alloys. There are 22 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 20 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 120 |
| Elongation at Break, % | 10 to 73 | |
| 5.7 to 17 |
| Fatigue Strength, MPa | 320 to 560 | |
| 550 to 630 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 83 | |
| 47 |
| Tensile Strength: Ultimate (UTS), MPa | 970 to 1720 | |
| 900 to 1270 |
| Tensile Strength: Yield (Proof), MPa | 510 to 1090 | |
| 850 to 1190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 400 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1660 |
| Melting Onset (Solidus), °C | 1440 | |
| 1600 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 520 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 5.0 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 52 |
| Embodied Energy, MJ/kg | 110 | |
| 860 |
| Embodied Water, L/kg | 400 | |
| 350 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 600 to 2790 | |
| 2940 to 5760 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 33 |
| Strength to Weight: Axial, points | 32 to 57 | |
| 50 to 70 |
| Strength to Weight: Bending, points | 26 to 38 | |
| 41 to 52 |
| Thermal Shock Resistance, points | 26 to 45 | |
| 55 to 77 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 3.0 to 4.0 |
| Boron (B), % | 0 to 0.1 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 0 to 0.050 |
| Chromium (Cr), % | 19 to 21 | |
| 5.5 to 6.5 |
| Cobalt (Co), % | 39 to 41 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.020 |
| Iron (Fe), % | 10 to 20.5 | |
| 0 to 0.3 |
| Manganese (Mn), % | 1.5 to 2.5 | |
| 0 |
| Molybdenum (Mo), % | 6.0 to 8.0 | |
| 3.5 to 4.5 |
| Nickel (Ni), % | 14 to 16 | |
| 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 1.2 | |
| 0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Titanium (Ti), % | 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 |