R30003 Cobalt vs. Grade 18 Titanium
R30003 cobalt belongs to the cobalt alloys classification, while grade 18 titanium belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is R30003 cobalt and the bottom bar is grade 18 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 110 |
| Elongation at Break, % | 10 to 73 | |
| 11 to 17 |
| Fatigue Strength, MPa | 320 to 560 | |
| 330 to 480 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 83 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 970 to 1720 | |
| 690 to 980 |
| Tensile Strength: Yield (Proof), MPa | 510 to 1090 | |
| 540 to 810 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 410 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1640 |
| Melting Onset (Solidus), °C | 1440 | |
| 1590 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 550 |
| Thermal Conductivity, W/m-K | 13 | |
| 8.3 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.9 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 1.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
| 2.7 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 4.5 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 41 |
| Embodied Energy, MJ/kg | 110 | |
| 670 |
| Embodied Water, L/kg | 400 | |
| 270 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 600 to 2790 | |
| 1380 to 3110 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 35 |
| Strength to Weight: Axial, points | 32 to 57 | |
| 43 to 61 |
| Strength to Weight: Bending, points | 26 to 38 | |
| 39 to 49 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 3.4 |
| Thermal Shock Resistance, points | 26 to 45 | |
| 47 to 67 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 2.5 to 3.5 |
| Boron (B), % | 0 to 0.1 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 0 to 0.080 |
| Chromium (Cr), % | 19 to 21 | |
| 0 |
| Cobalt (Co), % | 39 to 41 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 10 to 20.5 | |
| 0 to 0.25 |
| Manganese (Mn), % | 1.5 to 2.5 | |
| 0 |
| Molybdenum (Mo), % | 6.0 to 8.0 | |
| 0 |
| Nickel (Ni), % | 14 to 16 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.15 |
| 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 | |
| 92.5 to 95.5 |
| Vanadium (V), % | 0 | |
| 2.0 to 3.0 |
| Residuals, % | 0 | |
| 0 to 0.4 |