ASTM A27 Cast Steel vs. Type 4 Niobium
ASTM A27 cast steel belongs to the iron alloys classification, while Type 4 niobium belongs to the otherwise unclassified metals. There are 20 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 ASTM A27 cast steel and the bottom bar is Type 4 niobium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 110 |
| Elongation at Break, % | 25 to 27 | |
| 23 |
| Poisson's Ratio | 0.29 | |
| 0.4 |
| Shear Modulus, GPa | 73 | |
| 38 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 550 | |
| 220 |
| Tensile Strength: Yield (Proof), MPa | 230 to 310 | |
| 140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 310 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 270 |
| Thermal Conductivity, W/m-K | 52 | |
| 42 |
| Thermal Expansion, µm/m-K | 12 | |
| 7.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 8.6 |
| Embodied Water, L/kg | 45 to 46 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 96 to 120 | |
| 44 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 260 | |
| 93 |
| Stiffness to Weight: Axial, points | 13 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 24 | |
| 18 |
| Strength to Weight: Axial, points | 16 to 20 | |
| 7.2 |
| Strength to Weight: Bending, points | 17 to 19 | |
| 9.5 |
| Thermal Diffusivity, mm2/s | 14 | |
| 18 |
| Thermal Shock Resistance, points | 15 to 18 | |
| 21 |