Type 4 Niobium vs. Titanium 4-4-2
Type 4 niobium belongs to the otherwise unclassified metals classification, while titanium 4-4-2 belongs to the titanium alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is Type 4 niobium and the bottom bar is titanium 4-4-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 23 | |
| 10 |
| Poisson's Ratio | 0.4 | |
| 0.32 |
| Shear Modulus, GPa | 38 | |
| 42 |
| Tensile Strength: Ultimate (UTS), MPa | 220 | |
| 1150 to 1250 |
| Tensile Strength: Yield (Proof), MPa | 140 | |
| 1030 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 410 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 540 |
| Thermal Conductivity, W/m-K | 42 | |
| 6.7 |
| Thermal Expansion, µm/m-K | 7.3 | |
| 8.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.6 | |
| 4.7 |
| Embodied Water, L/kg | 160 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 44 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 93 | |
| 4700 to 5160 |
| Stiffness to Weight: Axial, points | 6.8 | |
| 13 |
| Stiffness to Weight: Bending, points | 18 | |
| 34 |
| Strength to Weight: Axial, points | 7.2 | |
| 68 to 74 |
| Strength to Weight: Bending, points | 9.5 | |
| 52 to 55 |
| Thermal Diffusivity, mm2/s | 18 | |
| 2.6 |
| Thermal Shock Resistance, points | 21 | |
| 86 to 93 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 3.0 to 5.0 |
| Carbon (C), % | 0 to 0.010 | |
| 0 to 0.080 |
| Hafnium (Hf), % | 0 to 0.020 | |
| 0 |
| Hydrogen (H), % | 0 to 0.0015 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 0.010 | |
| 0 to 0.2 |
| Molybdenum (Mo), % | 0 to 0.050 | |
| 3.0 to 5.0 |
| Nickel (Ni), % | 0 to 0.0050 | |
| 0 |
| Niobium (Nb), % | 98.1 to 99.2 | |
| 0 |
| Nitrogen (N), % | 0 to 0.010 | |
| 0 to 0.050 |
| Oxygen (O), % | 0 to 0.025 | |
| 0 to 0.25 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0.3 to 0.7 |
| Tantalum (Ta), % | 0 to 0.5 | |
| 0 |
| Tin (Sn), % | 0 | |
| 1.5 to 2.5 |
| Titanium (Ti), % | 0 to 0.020 | |
| 85.8 to 92.2 |
| Tungsten (W), % | 0 to 0.050 | |
| 0 |
| Zirconium (Zr), % | 0.8 to 1.2 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.4 |