Nuclear Grade Hafnium vs. Grade 350 Maraging Steel
Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while grade 350 maraging steel belongs to the iron alloys. There are 16 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 grade 350 maraging steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 190 |
| Elongation at Break, % | 25 | |
| 4.1 to 18 |
| Poisson's Ratio | 0.26 | |
| 0.3 |
| Shear Modulus, GPa | 31 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 350 | |
| 1140 to 2420 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 830 to 2300 |
Thermal Properties
| Latent Heat of Fusion, J/g | 130 | |
| 270 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 450 |
| Thermal Expansion, µm/m-K | 5.9 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 8.2 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 73 | |
| 98 to 190 |
| Stiffness to Weight: Axial, points | 3.3 | |
| 13 |
| Stiffness to Weight: Bending, points | 11 | |
| 23 |
| Strength to Weight: Axial, points | 7.4 | |
| 38 to 82 |
| Strength to Weight: Bending, points | 8.4 | |
| 29 to 49 |
| Thermal Shock Resistance, points | 55 | |
| 35 to 74 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.050 to 0.15 |
| Boron (B), % | 0 | |
| 0 to 0.0030 |
| Calcium (Ca), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 0 | |
| 0 to 0.030 |
| Cobalt (Co), % | 0 | |
| 11.5 to 12.5 |
| Hafnium (Hf), % | 99.8 to 100 | |
| 0 |
| Iron (Fe), % | 0 | |
| 61.2 to 64.6 |
| Manganese (Mn), % | 0 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 0 | |
| 4.6 to 5.2 |
| Nickel (Ni), % | 0 | |
| 18 to 19 |
| Phosphorus (P), % | 0 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 | |
| 1.3 to 1.6 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.020 |
| Residuals, % | 0 to 0.23 | |
| 0 |