Type 3 Niobium vs. ASTM A217 Cast Steel
Type 3 niobium belongs to the otherwise unclassified metals classification, while ASTM A217 cast steel belongs to the iron alloys. There are 21 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 Type 3 niobium and the bottom bar is ASTM A217 cast steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 110 | |
| 160 to 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 190 |
| Elongation at Break, % | 23 | |
| 21 to 27 |
| Poisson's Ratio | 0.4 | |
| 0.28 to 0.29 |
| Shear Modulus, GPa | 38 | |
| 73 to 75 |
| Tensile Strength: Ultimate (UTS), MPa | 220 | |
| 540 to 710 |
| Tensile Strength: Yield (Proof), MPa | 140 | |
| 270 to 460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 250 to 270 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 470 |
| Thermal Conductivity, W/m-K | 42 | |
| 26 to 50 |
| Thermal Expansion, µm/m-K | 7.3 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.6 | |
| 7.8 |
| Embodied Water, L/kg | 160 | |
| 47 to 87 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 44 | |
| 110 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 93 | |
| 190 to 570 |
| Stiffness to Weight: Axial, points | 6.8 | |
| 13 to 14 |
| Stiffness to Weight: Bending, points | 18 | |
| 24 to 25 |
| Strength to Weight: Axial, points | 7.2 | |
| 19 to 25 |
| Strength to Weight: Bending, points | 9.5 | |
| 19 to 23 |
| Thermal Diffusivity, mm2/s | 18 | |
| 6.9 to 14 |
| Thermal Shock Resistance, points | 21 | |
| 16 to 20 |