Nickel 718 vs. Titanium 6-6-2
Nickel 718 belongs to the nickel alloys classification, while titanium 6-6-2 belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is nickel 718 and the bottom bar is titanium 6-6-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 120 |
| Elongation at Break, % | 12 to 50 | |
| 6.7 to 9.0 |
| Fatigue Strength, MPa | 460 to 760 | |
| 590 to 670 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Reduction in Area, % | 34 to 64 | |
| 17 to 23 |
| Shear Modulus, GPa | 75 | |
| 44 |
| Shear Strength, MPa | 660 to 950 | |
| 670 to 800 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 1530 | |
| 1140 to 1370 |
| Tensile Strength: Yield (Proof), MPa | 510 to 1330 | |
| 1040 to 1230 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 980 | |
| 310 |
| Melting Completion (Liquidus), °C | 1340 | |
| 1610 |
| Melting Onset (Solidus), °C | 1260 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 540 |
| Thermal Conductivity, W/m-K | 11 | |
| 5.5 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.4 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.4 | |
| 1.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.5 | |
| 2.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 75 | |
| 40 |
| Density, g/cm3 | 8.3 | |
| 4.8 |
| Embodied Carbon, kg CO2/kg material | 13 | |
| 29 |
| Embodied Energy, MJ/kg | 190 | |
| 470 |
| Embodied Water, L/kg | 250 | |
| 200 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 390 | |
| 89 to 99 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 34 |
| Strength to Weight: Axial, points | 31 to 51 | |
| 66 to 79 |
| Strength to Weight: Bending, points | 25 to 35 | |
| 50 to 57 |
| Thermal Diffusivity, mm2/s | 3.0 | |
| 2.1 |
| Thermal Shock Resistance, points | 27 to 44 | |
| 75 to 90 |
Alloy Composition
| Aluminum (Al), % | 0.2 to 0.8 | |
| 5.0 to 6.0 |
| Boron (B), % | 0 to 0.0060 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.050 |
| Chromium (Cr), % | 17 to 21 | |
| 0 |
| Cobalt (Co), % | 0 to 1.0 | |
| 0 |
| Copper (Cu), % | 0 to 0.3 | |
| 0.35 to 1.0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 11.1 to 24.6 | |
| 0.35 to 1.0 |
| Manganese (Mn), % | 0 to 0.35 | |
| 0 |
| Molybdenum (Mo), % | 2.8 to 3.3 | |
| 5.0 to 6.0 |
| Nickel (Ni), % | 50 to 55 | |
| 0 |
| Niobium (Nb), % | 4.8 to 5.5 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.040 |
| Oxygen (O), % | 0 | |
| 0 to 0.2 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 |
| Silicon (Si), % | 0 to 0.35 | |
| 0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Tin (Sn), % | 0 | |
| 1.5 to 2.5 |
| Titanium (Ti), % | 0.65 to 1.2 | |
| 82.8 to 87.8 |
| Residuals, % | 0 | |
| 0 to 0.4 |