Nuclear Grade Hafnium vs. Automotive Malleable Cast Iron
Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while automotive malleable cast iron belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is nuclear grade hafnium and the bottom bar is automotive malleable cast iron.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 180 |
| Elongation at Break, % | 25 | |
| 1.0 to 10 |
| Poisson's Ratio | 0.26 | |
| 0.29 |
| Shear Modulus, GPa | 31 | |
| 70 |
| Tensile Strength: Ultimate (UTS), MPa | 350 | |
| 350 to 720 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 220 to 590 |
Thermal Properties
| Latent Heat of Fusion, J/g | 130 | |
| 260 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 480 |
| Thermal Expansion, µm/m-K | 5.9 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 7.6 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 73 | |
| 6.8 to 30 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 | |
| 130 to 950 |
| Stiffness to Weight: Axial, points | 3.3 | |
| 13 |
| Stiffness to Weight: Bending, points | 11 | |
| 25 |
| Strength to Weight: Axial, points | 7.4 | |
| 13 to 26 |
| Strength to Weight: Bending, points | 8.4 | |
| 14 to 24 |
| Thermal Shock Resistance, points | 55 | |
| 9.9 to 21 |
Alloy Composition
| Carbon (C), % | 0 | |
| 2.2 to 2.9 |
| Hafnium (Hf), % | 99.8 to 100 | |
| 0 |
| Iron (Fe), % | 0 | |
| 93.6 to 96.7 |
| Manganese (Mn), % | 0 | |
| 0.15 to 1.3 |
| Phosphorus (P), % | 0 | |
| 0.020 to 0.15 |
| Silicon (Si), % | 0 | |
| 0.9 to 1.9 |
| Sulfur (S), % | 0 | |
| 0.020 to 0.2 |
| Residuals, % | 0 to 0.23 | |
| 0 |