EN 1.7767 Steel vs. Type 3 Niobium
EN 1.7767 steel belongs to the iron alloys classification, while Type 3 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 EN 1.7767 steel and the bottom bar is Type 3 niobium.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 210 | |
| 110 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 100 |
| Elongation at Break, % | 20 | |
| 23 |
| Poisson's Ratio | 0.29 | |
| 0.4 |
| Shear Modulus, GPa | 74 | |
| 38 |
| Tensile Strength: Ultimate (UTS), MPa | 670 to 690 | |
| 220 |
| Tensile Strength: Yield (Proof), MPa | 460 to 500 | |
| 140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 310 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 270 |
| Thermal Conductivity, W/m-K | 40 | |
| 42 |
| Thermal Expansion, µm/m-K | 13 | |
| 7.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.9 | |
| 8.6 |
| Embodied Water, L/kg | 64 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 130 | |
| 44 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 570 to 650 | |
| 93 |
| Stiffness to Weight: Axial, points | 13 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 24 | |
| 18 |
| Strength to Weight: Axial, points | 24 | |
| 7.2 |
| Strength to Weight: Bending, points | 22 | |
| 9.5 |
| Thermal Diffusivity, mm2/s | 11 | |
| 18 |
| Thermal Shock Resistance, points | 19 to 20 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0.1 to 0.15 | |
| 0 to 0.010 |
| Chromium (Cr), % | 2.8 to 3.3 | |
| 0 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Hafnium (Hf), % | 0 | |
| 0 to 0.020 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 93.8 to 95.8 | |
| 0 to 0.0050 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0 |
| Molybdenum (Mo), % | 0.9 to 1.1 | |
| 0 to 0.010 |
| Nickel (Ni), % | 0 to 0.25 | |
| 0 to 0.0050 |
| Niobium (Nb), % | 0 to 0.070 | |
| 98.6 to 99.2 |
| Nitrogen (N), % | 0 to 0.012 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.015 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 |
| Silicon (Si), % | 0 to 0.15 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.0050 | |
| 0 |
| Tantalum (Ta), % | 0 | |
| 0 to 0.1 |
| Titanium (Ti), % | 0 to 0.030 | |
| 0 to 0.020 |
| Tungsten (W), % | 0 | |
| 0 to 0.030 |
| Vanadium (V), % | 0.2 to 0.3 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 0.8 to 1.2 |