EN 1.4477 Stainless Steel vs. Type 4 Niobium
EN 1.4477 stainless 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 (13, in this case) are not shown.
For each property being compared, the top bar is EN 1.4477 stainless steel and the bottom bar is Type 4 niobium.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 270 | |
| 120 |
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 110 |
| Elongation at Break, % | 22 to 23 | |
| 23 |
| Poisson's Ratio | 0.27 | |
| 0.4 |
| Shear Modulus, GPa | 81 | |
| 38 |
| Tensile Strength: Ultimate (UTS), MPa | 880 to 930 | |
| 220 |
| Tensile Strength: Yield (Proof), MPa | 620 to 730 | |
| 140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 310 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 270 |
| Thermal Conductivity, W/m-K | 13 | |
| 42 |
| Thermal Expansion, µm/m-K | 13 | |
| 7.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.7 | |
| 8.6 |
| Embodied Water, L/kg | 190 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 180 to 190 | |
| 44 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 940 to 1290 | |
| 93 |
| Stiffness to Weight: Axial, points | 15 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 25 | |
| 18 |
| Strength to Weight: Axial, points | 31 to 33 | |
| 7.2 |
| Strength to Weight: Bending, points | 26 to 27 | |
| 9.5 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 18 |
| Thermal Shock Resistance, points | 23 to 25 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0 to 0.010 |
| Chromium (Cr), % | 28 to 30 | |
| 0 |
| Copper (Cu), % | 0 to 0.8 | |
| 0 |
| Hafnium (Hf), % | 0 | |
| 0 to 0.020 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 56.6 to 63.6 | |
| 0 to 0.010 |
| Manganese (Mn), % | 0.8 to 1.5 | |
| 0 |
| Molybdenum (Mo), % | 1.5 to 2.6 | |
| 0 to 0.050 |
| Nickel (Ni), % | 5.8 to 7.5 | |
| 0 to 0.0050 |
| Niobium (Nb), % | 0 | |
| 98.1 to 99.2 |
| Nitrogen (N), % | 0.3 to 0.4 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.025 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0 to 0.5 | |
| 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 |