ASTM A209 Steel vs. Type 4 Niobium
ASTM A209 steel belongs to the iron alloys classification, while Type 4 niobium belongs to the otherwise unclassified metals. 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 ASTM A209 steel and the bottom bar is Type 4 niobium.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 to 150 | |
| 120 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 110 |
| Elongation at Break, % | 34 | |
| 23 |
| Poisson's Ratio | 0.29 | |
| 0.4 |
| Shear Modulus, GPa | 73 | |
| 38 |
| Tensile Strength: Ultimate (UTS), MPa | 420 to 460 | |
| 220 |
| Tensile Strength: Yield (Proof), MPa | 220 to 250 | |
| 140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 310 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 270 |
| Thermal Conductivity, W/m-K | 50 | |
| 42 |
| Thermal Expansion, µm/m-K | 13 | |
| 7.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.9 | |
| 8.6 |
| Embodied Water, L/kg | 47 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 130 | |
| 44 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 to 170 | |
| 93 |
| Stiffness to Weight: Axial, points | 13 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 24 | |
| 18 |
| Strength to Weight: Axial, points | 15 to 16 | |
| 7.2 |
| Strength to Weight: Bending, points | 16 to 17 | |
| 9.5 |
| Thermal Diffusivity, mm2/s | 13 | |
| 18 |
| Thermal Shock Resistance, points | 12 to 14 | |
| 21 |