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