Grade 20 Titanium vs. ASTM F15 Fe-Ni-Co
Grade 20 titanium belongs to the titanium alloys classification, while ASTM F15 Fe-Ni-Co belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is grade 20 titanium and the bottom bar is ASTM F15 Fe-Ni-Co.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 190 |
| Poisson's Ratio | 0.32 | |
| 0.3 |
| Shear Modulus, GPa | 47 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 900 to 1270 | |
| 520 to 880 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 270 |
| Melting Completion (Liquidus), °C | 1660 | |
| 1410 |
| Melting Onset (Solidus), °C | 1600 | |
| 1450 |
| Specific Heat Capacity, J/kg-K | 520 | |
| 460 |
| Thermal Expansion, µm/m-K | 9.6 | |
| 6.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.0 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 52 | |
| 5.2 |
| Embodied Energy, MJ/kg | 860 | |
| 71 |
| Embodied Water, L/kg | 350 | |
| 190 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 33 | |
| 23 |
| Strength to Weight: Axial, points | 50 to 70 | |
| 17 to 29 |
| Strength to Weight: Bending, points | 41 to 52 | |
| 17 to 24 |
| Thermal Shock Resistance, points | 55 to 77 | |
| 32 to 55 |
Alloy Composition
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| Aluminum (Al), % | 3.0 to 4.0 | |
| 0 to 0.1 |
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.040 |
| Chromium (Cr), % | 5.5 to 6.5 | |
| 0 to 0.2 |
| Cobalt (Co), % | 0 | |
| 16 to 18 |
| Copper (Cu), % | 0 | |
| 0 to 0.2 |
| Hydrogen (H), % | 0 to 0.020 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 50.3 to 56 |
| Magnesium (Mg), % | 0 | |
| 0 to 0.1 |
| Manganese (Mn), % | 0 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 3.5 to 4.5 | |
| 0 to 0.2 |
| Nickel (Ni), % | 0 | |
| 28 to 30 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.12 | |
| 0 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.2 |
| Titanium (Ti), % | 71 to 77 | |
| 0 to 0.1 |
| Vanadium (V), % | 7.5 to 8.5 | |
| 0 |
| Zirconium (Zr), % | 3.5 to 4.5 | |
| 0 to 0.1 |
| Residuals, % | 0 to 0.4 | |
| 0 |