EN 1.4655 Stainless Steel vs. Type 4 Niobium
EN 1.4655 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 1.4655 stainless steel and the bottom bar is Type 4 niobium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 110 |
| Elongation at Break, % | 23 to 25 | |
| 23 |
| Poisson's Ratio | 0.27 | |
| 0.4 |
| Shear Modulus, GPa | 78 | |
| 38 |
| Tensile Strength: Ultimate (UTS), MPa | 720 to 730 | |
| 220 |
| Tensile Strength: Yield (Proof), MPa | 450 to 480 | |
| 140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 310 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 270 |
| Thermal Conductivity, W/m-K | 15 | |
| 42 |
| Thermal Expansion, µm/m-K | 13 | |
| 7.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.7 | |
| 8.6 |
| Embodied Water, L/kg | 160 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 150 to 160 | |
| 44 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 510 to 580 | |
| 93 |
| Stiffness to Weight: Axial, points | 14 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 25 | |
| 18 |
| Strength to Weight: Axial, points | 26 | |
| 7.2 |
| Strength to Weight: Bending, points | 23 | |
| 9.5 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 18 |
| Thermal Shock Resistance, points | 20 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0 to 0.010 |
| Chromium (Cr), % | 22 to 24 | |
| 0 |
| Copper (Cu), % | 1.0 to 3.0 | |
| 0 |
| Hafnium (Hf), % | 0 | |
| 0 to 0.020 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 63.6 to 73.4 | |
| 0 to 0.010 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 |
| Molybdenum (Mo), % | 0.1 to 0.6 | |
| 0 to 0.050 |
| Nickel (Ni), % | 3.5 to 5.5 | |
| 0 to 0.0050 |
| Niobium (Nb), % | 0 | |
| 98.1 to 99.2 |
| Nitrogen (N), % | 0.050 to 0.2 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.025 |
| Phosphorus (P), % | 0 to 0.035 | |
| 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 |