Nuclear Grade Hafnium vs. SAE-AISI D5 Steel
Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while SAE-AISI D5 steel belongs to the iron alloys. There are 14 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is nuclear grade hafnium and the bottom bar is SAE-AISI D5 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 190 |
| Elongation at Break, % | 25 | |
| 5.4 to 14 |
| Poisson's Ratio | 0.26 | |
| 0.28 |
| Shear Modulus, GPa | 31 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 350 | |
| 770 to 2030 |
Thermal Properties
| Latent Heat of Fusion, J/g | 130 | |
| 270 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 480 |
| Thermal Expansion, µm/m-K | 5.9 | |
| 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 7.7 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.3 | |
| 14 |
| Stiffness to Weight: Bending, points | 11 | |
| 25 |
| Strength to Weight: Axial, points | 7.4 | |
| 28 to 73 |
| Strength to Weight: Bending, points | 8.4 | |
| 24 to 46 |
| Thermal Shock Resistance, points | 55 | |
| 26 to 67 |
Alloy Composition
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| Carbon (C), % | 0 | |
| 1.4 to 1.6 |
| Chromium (Cr), % | 0 | |
| 11 to 13 |
| Cobalt (Co), % | 0 | |
| 2.5 to 3.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Hafnium (Hf), % | 99.8 to 100 | |
| 0 |
| Iron (Fe), % | 0 | |
| 77.9 to 84.4 |
| Manganese (Mn), % | 0 | |
| 0 to 0.6 |
| Molybdenum (Mo), % | 0 | |
| 0.7 to 1.2 |
| Nickel (Ni), % | 0 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0 to 1.0 |
| Residuals, % | 0 to 0.23 | |
| 0 |