Nuclear Grade Hafnium vs. SAE-AISI D4 Steel
Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while SAE-AISI D4 steel belongs to the iron alloys. There are 16 material properties with values for both materials. Properties with values for just one material (14, 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 D4 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 190 |
| Elongation at Break, % | 25 | |
| 8.4 to 15 |
| Poisson's Ratio | 0.26 | |
| 0.28 |
| Shear Modulus, GPa | 31 | |
| 74 |
| Tensile Strength: Ultimate (UTS), MPa | 350 | |
| 760 to 2060 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 470 to 1540 |
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 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 7.7 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 73 | |
| 100 to 160 |
| Stiffness to Weight: Axial, points | 3.3 | |
| 14 |
| Stiffness to Weight: Bending, points | 11 | |
| 25 |
| Strength to Weight: Axial, points | 7.4 | |
| 27 to 75 |
| Strength to Weight: Bending, points | 8.4 | |
| 24 to 47 |
| Thermal Shock Resistance, points | 55 | |
| 23 to 63 |
Alloy Composition
| Carbon (C), % | 0 | |
| 2.1 to 2.4 |
| Chromium (Cr), % | 0 | |
| 11 to 13 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Hafnium (Hf), % | 99.8 to 100 | |
| 0 |
| Iron (Fe), % | 0 | |
| 80.6 to 86.3 |
| 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 |