Grade 21 Titanium vs. C55281 Copper
Grade 21 titanium belongs to the titanium alloys classification, while C55281 copper belongs to the copper alloys. There are 18 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is grade 21 titanium and the bottom bar is C55281 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 110 |
| Poisson's Ratio | 0.32 | |
| 0.34 |
| Shear Modulus, GPa | 51 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1340 | |
| 190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 310 | |
| 200 |
| Melting Completion (Liquidus), °C | 1740 | |
| 810 |
| Melting Onset (Solidus), °C | 1690 | |
| 640 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 400 |
| Thermal Expansion, µm/m-K | 7.1 | |
| 16 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.4 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 32 | |
| 7.0 |
| Embodied Energy, MJ/kg | 490 | |
| 110 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 6.9 |
| Stiffness to Weight: Bending, points | 32 | |
| 18 |
| Strength to Weight: Axial, points | 46 to 69 | |
| 6.1 |
| Strength to Weight: Bending, points | 38 to 50 | |
| 8.5 |
| Thermal Shock Resistance, points | 66 to 100 | |
| 7.7 |
Alloy Composition
| Aluminum (Al), % | 2.5 to 3.5 | |
| 0 |
| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Copper (Cu), % | 0 | |
| 88.5 to 89.4 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.4 | |
| 0 |
| Molybdenum (Mo), % | 14 to 16 | |
| 0 |
| Niobium (Nb), % | 2.2 to 3.2 | |
| 0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.17 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 5.8 to 6.2 |
| Silicon (Si), % | 0.15 to 0.25 | |
| 0 |
| Silver (Ag), % | 0 | |
| 4.8 to 5.2 |
| Titanium (Ti), % | 76 to 81.2 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.15 |