Titanium 4-4-2 vs. R30035 Cobalt
Titanium 4-4-2 belongs to the titanium alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 27 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 titanium 4-4-2 and the bottom bar is R30035 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 220 to 230 |
| Elongation at Break, % | 10 | |
| 9.0 to 46 |
| Fatigue Strength, MPa | 590 to 620 | |
| 170 to 740 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Reduction in Area, % | 20 | |
| 40 to 74 |
| Shear Modulus, GPa | 42 | |
| 84 to 89 |
| Tensile Strength: Ultimate (UTS), MPa | 1150 to 1250 | |
| 900 to 1900 |
| Tensile Strength: Yield (Proof), MPa | 1030 to 1080 | |
| 300 to 1650 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 320 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1440 |
| Melting Onset (Solidus), °C | 1560 | |
| 1320 |
| Specific Heat Capacity, J/kg-K | 540 | |
| 440 |
| Thermal Conductivity, W/m-K | 6.7 | |
| 11 |
| Thermal Expansion, µm/m-K | 8.6 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 39 | |
| 100 |
| Density, g/cm3 | 4.7 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 30 | |
| 10 |
| Embodied Energy, MJ/kg | 480 | |
| 140 |
| Embodied Water, L/kg | 180 | |
| 410 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 160 to 320 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 4700 to 5160 | |
| 210 to 5920 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 to 15 |
| Stiffness to Weight: Bending, points | 34 | |
| 23 to 24 |
| Strength to Weight: Axial, points | 68 to 74 | |
| 29 to 61 |
| Strength to Weight: Bending, points | 52 to 55 | |
| 24 to 39 |
| Thermal Diffusivity, mm2/s | 2.6 | |
| 3.0 |
| Thermal Shock Resistance, points | 86 to 93 | |
| 23 to 46 |
Alloy Composition
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| Aluminum (Al), % | 3.0 to 5.0 | |
| 0 |
| Boron (B), % | 0 | |
| 0 to 0.015 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.025 |
| Chromium (Cr), % | 0 | |
| 19 to 21 |
| Cobalt (Co), % | 0 | |
| 29.1 to 39 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.2 | |
| 0 to 1.0 |
| Manganese (Mn), % | 0 | |
| 0 to 0.15 |
| Molybdenum (Mo), % | 3.0 to 5.0 | |
| 9.0 to 10.5 |
| Nickel (Ni), % | 0 | |
| 33 to 37 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Oxygen (O), % | 0 to 0.25 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.015 |
| Silicon (Si), % | 0.3 to 0.7 | |
| 0 to 0.15 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Tin (Sn), % | 1.5 to 2.5 | |
| 0 |
| Titanium (Ti), % | 85.8 to 92.2 | |
| 0 to 1.0 |
| Residuals, % | 0 to 0.4 | |
| 0 |