Reactor Grade Zirconium vs. Low-oxygen Zirconium
Both reactor grade zirconium and low-oxygen zirconium are otherwise unclassified metals. Both are furnished in the annealed condition. They have a very high 97% of their average alloy composition in common.
For each property being compared, the top bar is reactor grade zirconium and the bottom bar is low-oxygen zirconium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 98 | |
| 98 |
| Elongation at Break, % | 21 | |
| 23 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 37 | |
| 37 |
| Tensile Strength: Ultimate (UTS), MPa | 330 | |
| 330 |
| Tensile Strength: Yield (Proof), MPa | 160 | |
| 270 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 270 |
| Thermal Conductivity, W/m-K | 22 | |
| 22 |
| Thermal Expansion, µm/m-K | 5.9 | |
| 5.7 |
Otherwise Unclassified Properties
| Density, g/cm3 | 6.5 | |
| 6.7 |
| Embodied Water, L/kg | 280 | |
| 450 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 56 | |
| 70 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 | |
| 370 |
| Stiffness to Weight: Axial, points | 8.4 | |
| 8.1 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 14 | |
| 14 |
| Strength to Weight: Bending, points | 16 | |
| 16 |
| Thermal Diffusivity, mm2/s | 13 | |
| 12 |
| Thermal Shock Resistance, points | 41 | |
| 42 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0 to 0.050 |
| Chromium (Cr), % | 0 | |
| 0 to 0.2 |
| Hafnium (Hf), % | 0 | |
| 0 to 4.5 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0050 |
| Iron (Fe), % | 0 | |
| 0 to 0.2 |
| Nitrogen (N), % | 0 | |
| 0 to 0.025 |
| Oxygen (O), % | 0 | |
| 0 to 0.1 |
| Zirconium (Zr), % | 99.7 to 100 | |
| 94.7 to 100 |
| Residuals, % | 0 to 0.27 | |
| 0 |