EN 1.4031 Stainless Steel vs. Type 4 Niobium
EN 1.4031 stainless 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 (13, in this case) are not shown.
For each property being compared, the top bar is EN 1.4031 stainless 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, % | 11 to 13 | |
| 23 |
| Poisson's Ratio | 0.28 | |
| 0.4 |
| Shear Modulus, GPa | 76 | |
| 38 |
| Tensile Strength: Ultimate (UTS), MPa | 670 to 900 | |
| 220 |
| Tensile Strength: Yield (Proof), MPa | 390 to 730 | |
| 140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 310 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 270 |
| Thermal Conductivity, W/m-K | 30 | |
| 42 |
| Thermal Expansion, µm/m-K | 11 | |
| 7.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.7 | |
| 8.6 |
| Embodied Water, L/kg | 100 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 77 to 94 | |
| 44 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 380 to 1360 | |
| 93 |
| Stiffness to Weight: Axial, points | 14 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 25 | |
| 18 |
| Strength to Weight: Axial, points | 24 to 32 | |
| 7.2 |
| Strength to Weight: Bending, points | 22 to 27 | |
| 9.5 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 18 |
| Thermal Shock Resistance, points | 23 to 32 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0.36 to 0.42 | |
| 0 to 0.010 |
| Chromium (Cr), % | 12.5 to 14.5 | |
| 0 |
| Hafnium (Hf), % | 0 | |
| 0 to 0.020 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 83 to 87.1 | |
| 0 to 0.010 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.050 |
| Nickel (Ni), % | 0 | |
| 0 to 0.0050 |
| Niobium (Nb), % | 0 | |
| 98.1 to 99.2 |
| Nitrogen (N), % | 0 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.025 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Tantalum (Ta), % | 0 | |
| 0 to 0.5 |
| Titanium (Ti), % | 0 | |
| 0 to 0.020 |
| Tungsten (W), % | 0 | |
| 0 to 0.050 |
| Zirconium (Zr), % | 0 | |
| 0.8 to 1.2 |