R30605 Cobalt vs. Titanium 15-3-3-3
R30605 cobalt belongs to the cobalt alloys classification, while titanium 15-3-3-3 belongs to the titanium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is R30605 cobalt and the bottom bar is titanium 15-3-3-3.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 100 |
| Elongation at Break, % | 34 | |
| 5.7 to 8.0 |
| Fatigue Strength, MPa | 260 to 590 | |
| 610 to 710 |
| Poisson's Ratio | 0.29 | |
| 0.33 |
| Shear Modulus, GPa | 81 | |
| 39 |
| Tensile Strength: Ultimate (UTS), MPa | 1130 to 1900 | |
| 1120 to 1390 |
| Tensile Strength: Yield (Proof), MPa | 470 to 1600 | |
| 1100 to 1340 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 390 |
| Melting Completion (Liquidus), °C | 1410 | |
| 1620 |
| Melting Onset (Solidus), °C | 1330 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 520 |
| Thermal Conductivity, W/m-K | 9.6 | |
| 8.1 |
| Thermal Expansion, µm/m-K | 12 | |
| 9.8 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 1.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.8 | |
| 2.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.6 | |
| 4.8 |
| Embodied Carbon, kg CO2/kg material | 9.8 | |
| 59 |
| Embodied Energy, MJ/kg | 140 | |
| 950 |
| Embodied Water, L/kg | 450 | |
| 260 |
Common Calculations
| Stiffness to Weight: Axial, points | 12 | |
| 12 |
| Stiffness to Weight: Bending, points | 21 | |
| 32 |
| Strength to Weight: Axial, points | 33 to 55 | |
| 64 to 80 |
| Strength to Weight: Bending, points | 25 to 36 | |
| 50 to 57 |
| Thermal Diffusivity, mm2/s | 2.5 | |
| 3.2 |
| Thermal Shock Resistance, points | 31 to 52 | |
| 79 to 98 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 2.5 to 3.5 |
| Carbon (C), % | 0.050 to 0.15 | |
| 0 to 0.050 |
| Chromium (Cr), % | 19 to 21 | |
| 2.5 to 3.5 |
| Cobalt (Co), % | 46.4 to 57 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 3.0 | |
| 0 to 0.25 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 |
| Nickel (Ni), % | 9.0 to 11 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.050 |
| Oxygen (O), % | 0 | |
| 0 to 0.13 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tin (Sn), % | 0 | |
| 2.5 to 3.5 |
| Titanium (Ti), % | 0 | |
| 72.6 to 78.5 |
| Tungsten (W), % | 14 to 16 | |
| 0 |
| Vanadium (V), % | 0 | |
| 14 to 16 |
| Residuals, % | 0 | |
| 0 to 0.4 |