Nuclear Grade Hafnium vs. Grade 704C Zirconium
Both nuclear grade hafnium and grade 704C zirconium are otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is nuclear grade hafnium and the bottom bar is grade 704C zirconium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 97 |
| Elongation at Break, % | 25 | |
| 11 |
| Poisson's Ratio | 0.26 | |
| 0.34 |
| Shear Modulus, GPa | 31 | |
| 36 |
| Tensile Strength: Ultimate (UTS), MPa | 350 | |
| 470 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 130 | |
| 240 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 270 |
| Thermal Expansion, µm/m-K | 5.9 | |
| 5.9 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 6.7 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 73 | |
| 48 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 | |
| 490 |
| Stiffness to Weight: Axial, points | 3.3 | |
| 8.1 |
| Stiffness to Weight: Bending, points | 11 | |
| 23 |
| Strength to Weight: Axial, points | 7.4 | |
| 20 |
| Strength to Weight: Bending, points | 8.4 | |
| 20 |
| Thermal Shock Resistance, points | 55 | |
| 58 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0 to 0.1 |
| Hafnium (Hf), % | 99.8 to 100 | |
| 0 to 4.5 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0050 |
| Iron (Fe), % | 0 | |
| 0 to 0.3 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 | |
| 0 to 0.010 |
| Tin (Sn), % | 0 | |
| 1.0 to 2.0 |
| Zirconium (Zr), % | 0 | |
| 92.9 to 99 |
| Residuals, % | 0 to 0.23 | |
| 0 |