SAE-AISI 1108 Steel vs. Nuclear Grade Hafnium
SAE-AISI 1108 steel belongs to the iron alloys classification, while nuclear grade hafnium belongs to the otherwise unclassified metals. 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 SAE-AISI 1108 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, % | 23 to 34 | |
| 25 |
| Poisson's Ratio | 0.29 | |
| 0.26 |
| Shear Modulus, GPa | 73 | |
| 31 |
| Tensile Strength: Ultimate (UTS), MPa | 380 to 440 | |
| 350 |
| Tensile Strength: Yield (Proof), MPa | 220 to 360 | |
| 170 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 130 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 140 |
| Thermal Expansion, µm/m-K | 12 | |
| 5.9 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.9 | |
| 13 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 95 to 110 | |
| 73 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 to 340 | |
| 180 |
| Stiffness to Weight: Axial, points | 13 | |
| 3.3 |
| Stiffness to Weight: Bending, points | 24 | |
| 11 |
| Strength to Weight: Axial, points | 13 to 16 | |
| 7.4 |
| Strength to Weight: Bending, points | 15 to 16 | |
| 8.4 |
| Thermal Shock Resistance, points | 12 to 14 | |
| 55 |
Alloy Composition
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| Carbon (C), % | 0.080 to 0.13 | |
| 0 |
| Hafnium (Hf), % | 0 | |
| 99.8 to 100 |
| Iron (Fe), % | 98.9 to 99.24 | |
| 0 |
| Manganese (Mn), % | 0.6 to 0.8 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Sulfur (S), % | 0.080 to 0.13 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.23 |