C72900 Copper-nickel vs. Grade 18 Titanium
C72900 copper-nickel belongs to the copper alloys classification, while grade 18 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is C72900 copper-nickel and the bottom bar is grade 18 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 110 |
| Elongation at Break, % | 6.0 to 20 | |
| 11 to 17 |
| Poisson's Ratio | 0.34 | |
| 0.32 |
| Shear Modulus, GPa | 45 | |
| 40 |
| Shear Strength, MPa | 540 to 630 | |
| 420 to 590 |
| Tensile Strength: Ultimate (UTS), MPa | 870 to 1080 | |
| 690 to 980 |
| Tensile Strength: Yield (Proof), MPa | 700 to 920 | |
| 540 to 810 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 210 | |
| 330 |
| Melting Completion (Liquidus), °C | 1120 | |
| 1640 |
| Melting Onset (Solidus), °C | 950 | |
| 1590 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 550 |
| Thermal Conductivity, W/m-K | 29 | |
| 8.3 |
| Thermal Expansion, µm/m-K | 17 | |
| 9.9 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.8 | |
| 1.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 2.7 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.8 | |
| 4.5 |
| Embodied Carbon, kg CO2/kg material | 4.6 | |
| 41 |
| Embodied Energy, MJ/kg | 72 | |
| 670 |
| Embodied Water, L/kg | 360 | |
| 270 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 49 to 210 | |
| 87 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2030 to 3490 | |
| 1380 to 3110 |
| Stiffness to Weight: Axial, points | 7.6 | |
| 13 |
| Stiffness to Weight: Bending, points | 19 | |
| 35 |
| Strength to Weight: Axial, points | 27 to 34 | |
| 43 to 61 |
| Strength to Weight: Bending, points | 23 to 27 | |
| 39 to 49 |
| Thermal Diffusivity, mm2/s | 8.6 | |
| 3.4 |
| Thermal Shock Resistance, points | 31 to 38 | |
| 47 to 67 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 2.5 to 3.5 |
| Carbon (C), % | 0 | |
| 0 to 0.080 |
| Copper (Cu), % | 74.1 to 78 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 0.5 | |
| 0 to 0.25 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 |
| Magnesium (Mg), % | 0 to 0.15 | |
| 0 |
| Manganese (Mn), % | 0 to 0.3 | |
| 0 |
| Nickel (Ni), % | 14.5 to 15.5 | |
| 0 |
| Niobium (Nb), % | 0 to 0.1 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.15 |
| Palladium (Pd), % | 0 | |
| 0.040 to 0.080 |
| Tin (Sn), % | 7.5 to 8.5 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 92.5 to 95.5 |
| Vanadium (V), % | 0 | |
| 2.0 to 3.0 |
| Zinc (Zn), % | 0 to 0.5 | |
| 0 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.4 |