Type 3 Niobium vs. AWS E33-31
Type 3 niobium belongs to the otherwise unclassified metals classification, while AWS E33-31 belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is Type 3 niobium and the bottom bar is AWS E33-31.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 210 |
| Elongation at Break, % | 23 | |
| 29 |
| Poisson's Ratio | 0.4 | |
| 0.27 |
| Shear Modulus, GPa | 38 | |
| 81 |
| Tensile Strength: Ultimate (UTS), MPa | 220 | |
| 810 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 320 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 480 |
| Thermal Expansion, µm/m-K | 7.3 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.6 | |
| 7.9 |
| Embodied Water, L/kg | 160 | |
| 260 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.8 | |
| 14 |
| Stiffness to Weight: Bending, points | 18 | |
| 25 |
| Strength to Weight: Axial, points | 7.2 | |
| 28 |
| Strength to Weight: Bending, points | 9.5 | |
| 24 |
| Thermal Shock Resistance, points | 21 | |
| 19 |
Alloy Composition
| Carbon (C), % | 0 to 0.010 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 31 to 35 |
| Copper (Cu), % | 0 | |
| 0.4 to 0.8 |
| Hafnium (Hf), % | 0 to 0.020 | |
| 0 |
| Hydrogen (H), % | 0 to 0.0015 | |
| 0 |
| Iron (Fe), % | 0 to 0.0050 | |
| 24.7 to 34.8 |
| Manganese (Mn), % | 0 | |
| 2.5 to 4.0 |
| Molybdenum (Mo), % | 0 to 0.010 | |
| 1.0 to 2.0 |
| Nickel (Ni), % | 0 to 0.0050 | |
| 30 to 32 |
| Niobium (Nb), % | 98.6 to 99.2 | |
| 0 |
| Nitrogen (N), % | 0 to 0.010 | |
| 0.3 to 0.5 |
| Oxygen (O), % | 0 to 0.015 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 to 0.9 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Tantalum (Ta), % | 0 to 0.1 | |
| 0 |
| Titanium (Ti), % | 0 to 0.020 | |
| 0 |
| Tungsten (W), % | 0 to 0.030 | |
| 0 |
| Zirconium (Zr), % | 0.8 to 1.2 | |
| 0 |