C17500 Copper vs. Grade 21 Titanium
C17500 copper belongs to the copper alloys classification, while grade 21 titanium belongs to the titanium alloys. There are 28 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 C17500 copper and the bottom bar is grade 21 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 140 |
| Elongation at Break, % | 6.0 to 30 | |
| 9.0 to 17 |
| Fatigue Strength, MPa | 170 to 310 | |
| 550 to 660 |
| Poisson's Ratio | 0.34 | |
| 0.32 |
| Shear Modulus, GPa | 45 | |
| 51 |
| Shear Strength, MPa | 200 to 520 | |
| 550 to 790 |
| Tensile Strength: Ultimate (UTS), MPa | 310 to 860 | |
| 890 to 1340 |
| Tensile Strength: Yield (Proof), MPa | 170 to 760 | |
| 870 to 1170 |
Thermal Properties
| Latent Heat of Fusion, J/g | 220 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 220 | |
| 310 |
| Melting Completion (Liquidus), °C | 1060 | |
| 1740 |
| Melting Onset (Solidus), °C | 1020 | |
| 1690 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 500 |
| Thermal Conductivity, W/m-K | 200 | |
| 7.5 |
| Thermal Expansion, µm/m-K | 18 | |
| 7.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 60 | |
| 60 |
| Density, g/cm3 | 8.9 | |
| 5.4 |
| Embodied Carbon, kg CO2/kg material | 4.7 | |
| 32 |
| Embodied Energy, MJ/kg | 73 | |
| 490 |
| Embodied Water, L/kg | 320 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 30 to 120 | |
| 110 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 120 to 2390 | |
| 2760 to 5010 |
| Stiffness to Weight: Axial, points | 7.5 | |
| 14 |
| Stiffness to Weight: Bending, points | 18 | |
| 32 |
| Strength to Weight: Axial, points | 9.7 to 27 | |
| 46 to 69 |
| Strength to Weight: Bending, points | 11 to 23 | |
| 38 to 50 |
| Thermal Diffusivity, mm2/s | 59 | |
| 2.8 |
| Thermal Shock Resistance, points | 11 to 29 | |
| 66 to 100 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.2 | |
| 2.5 to 3.5 |
| Beryllium (Be), % | 0.4 to 0.7 | |
| 0 |
| Carbon (C), % | 0 | |
| 0 to 0.050 |
| Cobalt (Co), % | 2.4 to 2.7 | |
| 0 |
| Copper (Cu), % | 95.6 to 97.2 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 0.1 | |
| 0 to 0.4 |
| Molybdenum (Mo), % | 0 | |
| 14 to 16 |
| Niobium (Nb), % | 0 | |
| 2.2 to 3.2 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.17 |
| Silicon (Si), % | 0 to 0.2 | |
| 0.15 to 0.25 |
| Titanium (Ti), % | 0 | |
| 76 to 81.2 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.4 |