Nickel 718 vs. ASTM B817 Type I
Nickel 718 belongs to the nickel alloys classification, while ASTM B817 type I 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 ASTM B817 type I.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 100 |
| Elongation at Break, % | 12 to 50 | |
| 4.0 to 13 |
| Fatigue Strength, MPa | 460 to 760 | |
| 360 to 520 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Reduction in Area, % | 34 to 64 | |
| 5.0 to 29 |
| Shear Modulus, GPa | 75 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 1530 | |
| 770 to 960 |
| Tensile Strength: Yield (Proof), MPa | 510 to 1330 | |
| 700 to 860 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 980 | |
| 340 |
| Melting Completion (Liquidus), °C | 1340 | |
| 1600 |
| Melting Onset (Solidus), °C | 1260 | |
| 1550 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 560 |
| Thermal Conductivity, W/m-K | 11 | |
| 7.1 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.6 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.4 | |
| 1.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.5 | |
| 2.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 75 | |
| 36 |
| Density, g/cm3 | 8.3 | |
| 4.4 |
| Embodied Carbon, kg CO2/kg material | 13 | |
| 38 |
| Embodied Energy, MJ/kg | 190 | |
| 610 |
| Embodied Water, L/kg | 250 | |
| 200 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 390 | |
| 30 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 660 to 4560 | |
| 2310 to 3540 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 35 |
| Strength to Weight: Axial, points | 31 to 51 | |
| 48 to 60 |
| Strength to Weight: Bending, points | 25 to 35 | |
| 42 to 49 |
| Thermal Diffusivity, mm2/s | 3.0 | |
| 2.9 |
| Thermal Shock Resistance, points | 27 to 44 | |
| 54 to 68 |
Alloy Composition
| Aluminum (Al), % | 0.2 to 0.8 | |
| 5.5 to 6.8 |
| Boron (B), % | 0 to 0.0060 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.1 |
| Chlorine (Cl), % | 0 | |
| 0 to 0.2 |
| Chromium (Cr), % | 17 to 21 | |
| 0 |
| Cobalt (Co), % | 0 to 1.0 | |
| 0 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 11.1 to 24.6 | |
| 0 to 0.4 |
| Manganese (Mn), % | 0 to 0.35 | |
| 0 |
| Molybdenum (Mo), % | 2.8 to 3.3 | |
| 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 0.3 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 |
| Silicon (Si), % | 0 to 0.35 | |
| 0 to 0.1 |
| Sodium (Na), % | 0 | |
| 0 to 0.2 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Titanium (Ti), % | 0.65 to 1.2 | |
| 87 to 91 |
| Vanadium (V), % | 0 | |
| 3.5 to 4.5 |
| Residuals, % | 0 | |
| 0 to 0.4 |