Grade 21 Titanium vs. C17000 Copper
Grade 21 titanium belongs to the titanium alloys classification, while C17000 copper belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is grade 21 titanium and the bottom bar is C17000 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 120 |
| Elongation at Break, % | 9.0 to 17 | |
| 1.1 to 31 |
| Poisson's Ratio | 0.32 | |
| 0.33 |
| Shear Modulus, GPa | 51 | |
| 45 |
| Shear Strength, MPa | 550 to 790 | |
| 320 to 750 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1340 | |
| 490 to 1310 |
| Tensile Strength: Yield (Proof), MPa | 870 to 1170 | |
| 160 to 1140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 230 |
| Maximum Temperature: Mechanical, °C | 310 | |
| 270 |
| Melting Completion (Liquidus), °C | 1740 | |
| 980 |
| Melting Onset (Solidus), °C | 1690 | |
| 870 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 390 |
| Thermal Conductivity, W/m-K | 7.5 | |
| 110 |
| Thermal Expansion, µm/m-K | 7.1 | |
| 17 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.4 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 32 | |
| 8.7 |
| Embodied Energy, MJ/kg | 490 | |
| 140 |
| Embodied Water, L/kg | 180 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 180 | |
| 4.2 to 390 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2760 to 5010 | |
| 110 to 5420 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.6 |
| Stiffness to Weight: Bending, points | 32 | |
| 19 |
| Strength to Weight: Axial, points | 46 to 69 | |
| 15 to 41 |
| Strength to Weight: Bending, points | 38 to 50 | |
| 16 to 30 |
| Thermal Diffusivity, mm2/s | 2.8 | |
| 32 |
| Thermal Shock Resistance, points | 66 to 100 | |
| 17 to 45 |
Alloy Composition
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| Aluminum (Al), % | 2.5 to 3.5 | |
| 0 to 0.2 |
| Beryllium (Be), % | 0 | |
| 1.6 to 1.8 |
| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Copper (Cu), % | 0 | |
| 96.3 to 98.2 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.4 | |
| 0 to 0.4 |
| Molybdenum (Mo), % | 14 to 16 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 0.2 to 0.6 |
| Niobium (Nb), % | 2.2 to 3.2 | |
| 0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.17 | |
| 0 |
| Silicon (Si), % | 0.15 to 0.25 | |
| 0 to 0.2 |
| Titanium (Ti), % | 76 to 81.2 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.5 |