S20910 Stainless Steel vs. Type 4 Niobium
S20910 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 (11, in this case) are not shown.
For each property being compared, the top bar is S20910 stainless steel and the bottom bar is Type 4 niobium.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 230 to 290 | |
| 120 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 110 |
| Elongation at Break, % | 14 to 39 | |
| 23 |
| Poisson's Ratio | 0.28 | |
| 0.4 |
| Shear Modulus, GPa | 79 | |
| 38 |
| Tensile Strength: Ultimate (UTS), MPa | 780 to 940 | |
| 220 |
| Tensile Strength: Yield (Proof), MPa | 430 to 810 | |
| 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 | 16 | |
| 7.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 8.6 |
| Embodied Water, L/kg | 180 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 260 | |
| 44 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 460 to 1640 | |
| 93 |
| Stiffness to Weight: Axial, points | 14 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 25 | |
| 18 |
| Strength to Weight: Axial, points | 28 to 33 | |
| 7.2 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 9.5 |
| Thermal Diffusivity, mm2/s | 3.6 | |
| 18 |
| Thermal Shock Resistance, points | 17 to 21 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.060 | |
| 0 to 0.010 |
| Chromium (Cr), % | 20.5 to 23.5 | |
| 0 |
| Hafnium (Hf), % | 0 | |
| 0 to 0.020 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 52.1 to 62.1 | |
| 0 to 0.010 |
| Manganese (Mn), % | 4.0 to 6.0 | |
| 0 |
| Molybdenum (Mo), % | 1.5 to 3.0 | |
| 0 to 0.050 |
| Nickel (Ni), % | 11.5 to 13.5 | |
| 0 to 0.0050 |
| Niobium (Nb), % | 0.1 to 0.3 | |
| 98.1 to 99.2 |
| Nitrogen (N), % | 0.2 to 0.4 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.025 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tantalum (Ta), % | 0 | |
| 0 to 0.5 |
| Titanium (Ti), % | 0 | |
| 0 to 0.020 |
| Tungsten (W), % | 0 | |
| 0 to 0.050 |
| Vanadium (V), % | 0.1 to 0.3 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 0.8 to 1.2 |