ASTM A302 Alloy Steel vs. Nuclear Grade Hafnium
ASTM A302 alloy 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 (14, in this case) are not shown.
For each property being compared, the top bar is ASTM A302 alloy 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, % | 20 to 23 | |
| 25 |
| Poisson's Ratio | 0.29 | |
| 0.26 |
| Shear Modulus, GPa | 73 | |
| 31 |
| Tensile Strength: Ultimate (UTS), MPa | 590 to 620 | |
| 350 |
| Tensile Strength: Yield (Proof), MPa | 350 to 390 | |
| 170 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 130 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 140 |
| Thermal Expansion, µm/m-K | 13 | |
| 5.9 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 to 7.9 | |
| 13 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 73 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 330 to 410 | |
| 180 |
| Stiffness to Weight: Axial, points | 13 | |
| 3.3 |
| Stiffness to Weight: Bending, points | 24 | |
| 11 |
| Strength to Weight: Axial, points | 21 to 22 | |
| 7.4 |
| Strength to Weight: Bending, points | 20 to 21 | |
| 8.4 |
| Thermal Shock Resistance, points | 17 to 18 | |
| 55 |