Nuclear Grade Hafnium vs. C68700 Brass
Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while C68700 brass belongs to the copper alloys. There are 15 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is nuclear grade hafnium and the bottom bar is C68700 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 110 |
| Poisson's Ratio | 0.26 | |
| 0.32 |
| Shear Modulus, GPa | 31 | |
| 41 |
| Tensile Strength: Ultimate (UTS), MPa | 350 | |
| 390 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 130 | |
| 190 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 400 |
| Thermal Expansion, µm/m-K | 5.9 | |
| 19 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 8.3 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 | |
| 90 |
| Stiffness to Weight: Axial, points | 3.3 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 11 | |
| 19 |
| Strength to Weight: Axial, points | 7.4 | |
| 13 |
| Strength to Weight: Bending, points | 8.4 | |
| 14 |
| Thermal Shock Resistance, points | 55 | |
| 13 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 1.8 to 2.5 |
| Arsenic (As), % | 0 | |
| 0.020 to 0.1 |
| Copper (Cu), % | 0 | |
| 76 to 79 |
| Hafnium (Hf), % | 99.8 to 100 | |
| 0 |
| Iron (Fe), % | 0 | |
| 0 to 0.060 |
| Lead (Pb), % | 0 | |
| 0 to 0.070 |
| Zinc (Zn), % | 0 | |
| 17.8 to 22.2 |
| Residuals, % | 0 | |
| 0 to 0.5 |