Type 2 Niobium vs. S15700 Stainless Steel
Type 2 niobium belongs to the otherwise unclassified metals classification, while S15700 stainless steel belongs to the iron alloys. There are 21 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 2 niobium and the bottom bar is S15700 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 110 | |
| 200 to 460 |
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 200 |
| Elongation at Break, % | 29 | |
| 1.1 to 29 |
| Poisson's Ratio | 0.4 | |
| 0.28 |
| Shear Modulus, GPa | 38 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 140 | |
| 1180 to 1890 |
| Tensile Strength: Yield (Proof), MPa | 82 | |
| 500 to 1770 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 290 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 480 |
| Thermal Conductivity, W/m-K | 52 | |
| 16 |
| Thermal Expansion, µm/m-K | 7.3 | |
| 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.6 | |
| 7.8 |
| Embodied Water, L/kg | 160 | |
| 140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 35 | |
| 17 to 270 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 32 | |
| 640 to 4660 |
| Stiffness to Weight: Axial, points | 6.8 | |
| 14 |
| Stiffness to Weight: Bending, points | 18 | |
| 25 |
| Strength to Weight: Axial, points | 4.6 | |
| 42 to 67 |
| Strength to Weight: Bending, points | 7.1 | |
| 32 to 43 |
| Thermal Diffusivity, mm2/s | 23 | |
| 4.2 |
| Thermal Shock Resistance, points | 13 | |
| 39 to 63 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.75 to 1.5 |
| Carbon (C), % | 0 to 0.010 | |
| 0 to 0.090 |
| Chromium (Cr), % | 0 | |
| 14 to 16 |
| Hafnium (Hf), % | 0 to 0.020 | |
| 0 |
| Hydrogen (H), % | 0 to 0.0015 | |
| 0 |
| Iron (Fe), % | 0 to 0.010 | |
| 69.6 to 76.8 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.020 | |
| 2.0 to 3.0 |
| Nickel (Ni), % | 0 to 0.0050 | |
| 6.5 to 7.7 |
| Niobium (Nb), % | 99.5 to 100 | |
| 0 |
| Nitrogen (N), % | 0 to 0.010 | |
| 0 |
| Oxygen (O), % | 0 to 0.025 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Tantalum (Ta), % | 0 to 0.3 | |
| 0 |
| Titanium (Ti), % | 0 to 0.030 | |
| 0 |
| Tungsten (W), % | 0 to 0.050 | |
| 0 |
| Zirconium (Zr), % | 0 to 0.020 | |
| 0 |