Grade 29 Titanium vs. R30008 Cobalt
Grade 29 titanium belongs to the titanium alloys classification, while R30008 cobalt belongs to the cobalt alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is grade 29 titanium and the bottom bar is R30008 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 210 |
| Elongation at Break, % | 6.8 to 11 | |
| 1.1 to 73 |
| Fatigue Strength, MPa | 460 to 510 | |
| 320 to 530 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 40 | |
| 83 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 940 | |
| 950 to 1700 |
| Tensile Strength: Yield (Proof), MPa | 850 to 870 | |
| 500 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 320 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1400 |
| Melting Onset (Solidus), °C | 1560 | |
| 1330 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 450 |
| Thermal Expansion, µm/m-K | 9.3 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 95 |
| Density, g/cm3 | 4.5 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 39 | |
| 8.1 |
| Embodied Energy, MJ/kg | 640 | |
| 110 |
| Embodied Water, L/kg | 410 | |
| 400 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3420 to 3540 | |
| 590 to 2720 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 35 | |
| 24 |
| Strength to Weight: Axial, points | 58 to 59 | |
| 31 to 56 |
| Strength to Weight: Bending, points | 47 to 48 | |
| 25 to 37 |
| Thermal Shock Resistance, points | 68 to 69 | |
| 25 to 44 |
Alloy Composition
| Aluminum (Al), % | 5.5 to 6.5 | |
| 0 |
| Boron (B), % | 0 | |
| 0 to 0.0010 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.15 |
| Chromium (Cr), % | 0 | |
| 18.5 to 21.5 |
| Cobalt (Co), % | 0 | |
| 39 to 42 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 7.6 to 20 |
| Manganese (Mn), % | 0 | |
| 1.0 to 2.0 |
| Molybdenum (Mo), % | 0 | |
| 6.5 to 7.5 |
| Nickel (Ni), % | 0 | |
| 15 to 18 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.13 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.015 |
| Ruthenium (Ru), % | 0.080 to 0.14 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 1.2 |
| Sulfur (S), % | 0 | |
| 0 to 0.015 |
| Titanium (Ti), % | 88 to 90.9 | |
| 0 |
| Vanadium (V), % | 3.5 to 4.5 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |