Nuclear Grade Hafnium vs. Type 4 Magnetic Alloy
Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while Type 4 magnetic alloy belongs to the nickel alloys. There are 17 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is nuclear grade hafnium and the bottom bar is Type 4 magnetic alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 190 |
| Elongation at Break, % | 25 | |
| 2.0 to 40 |
| Poisson's Ratio | 0.26 | |
| 0.31 |
| Shear Modulus, GPa | 31 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 350 | |
| 620 to 1100 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 270 to 1040 |
Thermal Properties
| Latent Heat of Fusion, J/g | 130 | |
| 290 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 440 |
| Thermal Expansion, µm/m-K | 5.9 | |
| 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 8.8 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 73 | |
| 22 to 200 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 | |
| 190 to 2840 |
| Stiffness to Weight: Axial, points | 3.3 | |
| 12 |
| Stiffness to Weight: Bending, points | 11 | |
| 22 |
| Strength to Weight: Axial, points | 7.4 | |
| 19 to 35 |
| Strength to Weight: Bending, points | 8.4 | |
| 18 to 27 |
| Thermal Shock Resistance, points | 55 | |
| 21 to 37 |
Alloy Composition
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| Carbon (C), % | 0 | |
| 0 to 0.050 |
| Chromium (Cr), % | 0 | |
| 0 to 0.3 |
| Cobalt (Co), % | 0 | |
| 0 to 0.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Hafnium (Hf), % | 99.8 to 100 | |
| 0 |
| Iron (Fe), % | 0 | |
| 9.5 to 17.5 |
| Manganese (Mn), % | 0 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 0 | |
| 3.5 to 6.0 |
| Nickel (Ni), % | 0 | |
| 79 to 82 |
| Phosphorus (P), % | 0 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 | |
| 0 to 0.020 |
| Residuals, % | 0 to 0.23 | |
| 0 |