Grade 250 Maraging Steel vs. Nuclear Grade Hafnium
Grade 250 maraging steel belongs to the iron alloys classification, while nuclear grade hafnium belongs to the otherwise unclassified metals. 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 grade 250 maraging steel and the bottom bar is nuclear grade hafnium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 78 |
| Elongation at Break, % | 7.3 to 17 | |
| 25 |
| Poisson's Ratio | 0.3 | |
| 0.26 |
| Shear Modulus, GPa | 75 | |
| 31 |
| Tensile Strength: Ultimate (UTS), MPa | 970 to 1800 | |
| 350 |
| Tensile Strength: Yield (Proof), MPa | 660 to 1740 | |
| 170 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 130 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 140 |
| Thermal Expansion, µm/m-K | 12 | |
| 5.9 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.2 | |
| 13 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 to 150 | |
| 73 |
| Stiffness to Weight: Axial, points | 13 | |
| 3.3 |
| Stiffness to Weight: Bending, points | 23 | |
| 11 |
| Strength to Weight: Axial, points | 33 to 61 | |
| 7.4 |
| Strength to Weight: Bending, points | 26 to 40 | |
| 8.4 |
| Thermal Shock Resistance, points | 29 to 54 | |
| 55 |
Alloy Composition
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| Aluminum (Al), % | 0.050 to 0.15 | |
| 0 |
| Boron (B), % | 0 to 0.0030 | |
| 0 |
| Calcium (Ca), % | 0 to 0.050 | |
| 0 |
| Carbon (C), % | 0 to 0.030 | |
| 0 |
| Cobalt (Co), % | 7.0 to 8.5 | |
| 0 |
| Hafnium (Hf), % | 0 | |
| 99.8 to 100 |
| Iron (Fe), % | 66.3 to 71.1 | |
| 0 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0 |
| Molybdenum (Mo), % | 4.6 to 5.2 | |
| 0 |
| Nickel (Ni), % | 17 to 19 | |
| 0 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 |
| Titanium (Ti), % | 0.3 to 0.5 | |
| 0 |
| Zirconium (Zr), % | 0 to 0.020 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.23 |