Nuclear Grade Hafnium vs. SAE-AISI 1070 Steel
Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while SAE-AISI 1070 steel belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is nuclear grade hafnium and the bottom bar is SAE-AISI 1070 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 190 |
| Elongation at Break, % | 25 | |
| 10 to 13 |
| Poisson's Ratio | 0.26 | |
| 0.29 |
| Shear Modulus, GPa | 31 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 350 | |
| 640 to 760 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 420 to 560 |
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 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 7.8 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 73 | |
| 59 to 86 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 | |
| 470 to 850 |
| Stiffness to Weight: Axial, points | 3.3 | |
| 13 |
| Stiffness to Weight: Bending, points | 11 | |
| 24 |
| Strength to Weight: Axial, points | 7.4 | |
| 23 to 27 |
| Strength to Weight: Bending, points | 8.4 | |
| 21 to 24 |
| Thermal Shock Resistance, points | 55 | |
| 21 to 25 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0.65 to 0.75 |
| Hafnium (Hf), % | 99.8 to 100 | |
| 0 |
| Iron (Fe), % | 0 | |
| 98.3 to 98.8 |
| Manganese (Mn), % | 0 | |
| 0.6 to 0.9 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Sulfur (S), % | 0 | |
| 0 to 0.050 |
| Residuals, % | 0 to 0.23 | |
| 0 |