C72700 Copper-nickel vs. Nuclear Grade Hafnium
C72700 copper-nickel belongs to the copper alloys classification, while nuclear grade hafnium belongs to the otherwise unclassified metals. There are 17 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 C72700 copper-nickel and the bottom bar is nuclear grade hafnium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 78 |
| Elongation at Break, % | 4.0 to 36 | |
| 25 |
| Poisson's Ratio | 0.34 | |
| 0.26 |
| Shear Modulus, GPa | 44 | |
| 31 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 1070 | |
| 350 |
| Tensile Strength: Yield (Proof), MPa | 580 to 1060 | |
| 170 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 130 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 140 |
| Thermal Expansion, µm/m-K | 17 | |
| 5.9 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.8 | |
| 13 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 20 to 380 | |
| 73 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1420 to 4770 | |
| 180 |
| Stiffness to Weight: Axial, points | 7.4 | |
| 3.3 |
| Stiffness to Weight: Bending, points | 19 | |
| 11 |
| Strength to Weight: Axial, points | 14 to 34 | |
| 7.4 |
| Strength to Weight: Bending, points | 15 to 26 | |
| 8.4 |
| Thermal Shock Resistance, points | 16 to 38 | |
| 55 |
Alloy Composition
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| Copper (Cu), % | 82.1 to 86 | |
| 0 |
| Hafnium (Hf), % | 0 | |
| 99.8 to 100 |
| Iron (Fe), % | 0 to 0.5 | |
| 0 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 |
| Magnesium (Mg), % | 0 to 0.15 | |
| 0 |
| Manganese (Mn), % | 0.050 to 0.3 | |
| 0 |
| Nickel (Ni), % | 8.5 to 9.5 | |
| 0 |
| Niobium (Nb), % | 0 to 0.1 | |
| 0 |
| Tin (Sn), % | 5.5 to 6.5 | |
| 0 |
| Zinc (Zn), % | 0 to 0.5 | |
| 0 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.23 |