Nuclear Grade Hafnium vs. EN 1.6220 Steel
Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while EN 1.6220 steel belongs to the iron alloys. There are 17 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 EN 1.6220 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 190 |
| Elongation at Break, % | 25 | |
| 23 to 25 |
| Poisson's Ratio | 0.26 | |
| 0.29 |
| Shear Modulus, GPa | 31 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 350 | |
| 550 to 580 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 340 |
Thermal Properties
| Latent Heat of Fusion, J/g | 130 | |
| 250 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 470 |
| Thermal Expansion, µm/m-K | 5.9 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 7.8 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 73 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 | |
| 300 to 310 |
| Stiffness to Weight: Axial, points | 3.3 | |
| 13 |
| Stiffness to Weight: Bending, points | 11 | |
| 24 |
| Strength to Weight: Axial, points | 7.4 | |
| 19 to 20 |
| Strength to Weight: Bending, points | 8.4 | |
| 19 to 20 |
| Thermal Shock Resistance, points | 55 | |
| 16 to 17 |
Alloy Composition
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| Carbon (C), % | 0 | |
| 0.17 to 0.23 |
| Hafnium (Hf), % | 99.8 to 100 | |
| 0 |
| Iron (Fe), % | 0 | |
| 96.7 to 98.8 |
| Manganese (Mn), % | 0 | |
| 1.0 to 1.6 |
| Nickel (Ni), % | 0 | |
| 0 to 0.8 |
| Phosphorus (P), % | 0 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Residuals, % | 0 to 0.23 | |
| 0 |