Grade 20 Titanium vs. Reactor Grade Zirconium
Grade 20 titanium belongs to the titanium alloys classification, while reactor grade zirconium belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is grade 20 titanium and the bottom bar is reactor grade zirconium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 98 |
| Elongation at Break, % | 5.7 to 17 | |
| 21 |
| Poisson's Ratio | 0.32 | |
| 0.34 |
| Shear Modulus, GPa | 47 | |
| 37 |
| Tensile Strength: Ultimate (UTS), MPa | 900 to 1270 | |
| 330 |
| Tensile Strength: Yield (Proof), MPa | 850 to 1190 | |
| 160 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 250 |
| Specific Heat Capacity, J/kg-K | 520 | |
| 270 |
| Thermal Expansion, µm/m-K | 9.6 | |
| 5.9 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.0 | |
| 6.5 |
| Embodied Water, L/kg | 350 | |
| 280 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 150 | |
| 56 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2940 to 5760 | |
| 130 |
| Stiffness to Weight: Axial, points | 14 | |
| 8.4 |
| Stiffness to Weight: Bending, points | 33 | |
| 24 |
| Strength to Weight: Axial, points | 50 to 70 | |
| 14 |
| Strength to Weight: Bending, points | 41 to 52 | |
| 16 |
| Thermal Shock Resistance, points | 55 to 77 | |
| 41 |
Alloy Composition
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| Aluminum (Al), % | 3.0 to 4.0 | |
| 0 |
| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Chromium (Cr), % | 5.5 to 6.5 | |
| 0 |
| Hydrogen (H), % | 0 to 0.020 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 0 |
| Molybdenum (Mo), % | 3.5 to 4.5 | |
| 0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.12 | |
| 0 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Titanium (Ti), % | 71 to 77 | |
| 0 |
| Vanadium (V), % | 7.5 to 8.5 | |
| 0 |
| Zirconium (Zr), % | 3.5 to 4.5 | |
| 99.7 to 100 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.27 |