AISI 204 Stainless Steel vs. Type 4 Niobium
AISI 204 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 (12, in this case) are not shown.
For each property being compared, the top bar is AISI 204 stainless steel and the bottom bar is Type 4 niobium.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 to 330 | |
| 120 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 110 |
| Elongation at Break, % | 23 to 39 | |
| 23 |
| Poisson's Ratio | 0.28 | |
| 0.4 |
| Shear Modulus, GPa | 77 | |
| 38 |
| Tensile Strength: Ultimate (UTS), MPa | 730 to 1100 | |
| 220 |
| Tensile Strength: Yield (Proof), MPa | 380 to 1080 | |
| 140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 310 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 270 |
| Thermal Conductivity, W/m-K | 15 | |
| 42 |
| Thermal Expansion, µm/m-K | 17 | |
| 7.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.7 | |
| 8.6 |
| Embodied Water, L/kg | 130 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 240 to 250 | |
| 44 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 360 to 2940 | |
| 93 |
| Stiffness to Weight: Axial, points | 14 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 25 | |
| 18 |
| Strength to Weight: Axial, points | 27 to 40 | |
| 7.2 |
| Strength to Weight: Bending, points | 24 to 31 | |
| 9.5 |
| Thermal Diffusivity, mm2/s | 4.1 | |
| 18 |
| Thermal Shock Resistance, points | 16 to 24 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0 to 0.010 |
| Chromium (Cr), % | 15 to 17 | |
| 0 |
| Hafnium (Hf), % | 0 | |
| 0 to 0.020 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 69.6 to 76.4 | |
| 0 to 0.010 |
| Manganese (Mn), % | 7.0 to 9.0 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.050 |
| Nickel (Ni), % | 1.5 to 3.0 | |
| 0 to 0.0050 |
| Niobium (Nb), % | 0 | |
| 98.1 to 99.2 |
| Nitrogen (N), % | 0.15 to 0.3 | |
| 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 0.030 | |
| 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 |