Nickel 718 vs. Grade 20 Titanium
Nickel 718 belongs to the nickel alloys classification, while grade 20 titanium belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is nickel 718 and the bottom bar is grade 20 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 120 |
| Elongation at Break, % | 12 to 50 | |
| 5.7 to 17 |
| Fatigue Strength, MPa | 460 to 760 | |
| 550 to 630 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Reduction in Area, % | 34 to 64 | |
| 23 |
| Shear Modulus, GPa | 75 | |
| 47 |
| Shear Strength, MPa | 660 to 950 | |
| 560 to 740 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 1530 | |
| 900 to 1270 |
| Tensile Strength: Yield (Proof), MPa | 510 to 1330 | |
| 850 to 1190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 980 | |
| 370 |
| Melting Completion (Liquidus), °C | 1340 | |
| 1660 |
| Melting Onset (Solidus), °C | 1260 | |
| 1600 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 520 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.3 | |
| 5.0 |
| Embodied Carbon, kg CO2/kg material | 13 | |
| 52 |
| Embodied Energy, MJ/kg | 190 | |
| 860 |
| Embodied Water, L/kg | 250 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 390 | |
| 71 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 660 to 4560 | |
| 2940 to 5760 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 33 |
| Strength to Weight: Axial, points | 31 to 51 | |
| 50 to 70 |
| Strength to Weight: Bending, points | 25 to 35 | |
| 41 to 52 |
| Thermal Shock Resistance, points | 27 to 44 | |
| 55 to 77 |
Alloy Composition
| Aluminum (Al), % | 0.2 to 0.8 | |
| 3.0 to 4.0 |
| Boron (B), % | 0 to 0.0060 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.050 |
| Chromium (Cr), % | 17 to 21 | |
| 5.5 to 6.5 |
| Cobalt (Co), % | 0 to 1.0 | |
| 0 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.020 |
| Iron (Fe), % | 11.1 to 24.6 | |
| 0 to 0.3 |
| Manganese (Mn), % | 0 to 0.35 | |
| 0 |
| Molybdenum (Mo), % | 2.8 to 3.3 | |
| 3.5 to 4.5 |
| Nickel (Ni), % | 50 to 55 | |
| 0 |
| Niobium (Nb), % | 4.8 to 5.5 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.12 |
| Palladium (Pd), % | 0 | |
| 0.040 to 0.080 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 |
| Silicon (Si), % | 0 to 0.35 | |
| 0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Titanium (Ti), % | 0.65 to 1.2 | |
| 71 to 77 |
| Vanadium (V), % | 0 | |
| 7.5 to 8.5 |
| Zirconium (Zr), % | 0 | |
| 3.5 to 4.5 |
| Residuals, % | 0 | |
| 0 to 0.4 |