Nickel 718 vs. SAE-AISI D5 Steel
Nickel 718 belongs to the nickel alloys classification, while SAE-AISI D5 steel belongs to the iron alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 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 nickel 718 and the bottom bar is SAE-AISI D5 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 to 50 | |
| 5.4 to 14 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 75 | |
| 75 |
| Shear Strength, MPa | 660 to 950 | |
| 470 to 1180 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 1530 | |
| 770 to 2030 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 270 |
| Melting Completion (Liquidus), °C | 1340 | |
| 1430 |
| Melting Onset (Solidus), °C | 1260 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 480 |
| Thermal Conductivity, W/m-K | 11 | |
| 27 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.4 | |
| 4.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.5 | |
| 4.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 75 | |
| 13 |
| Density, g/cm3 | 8.3 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 13 | |
| 3.5 |
| Embodied Energy, MJ/kg | 190 | |
| 51 |
| Embodied Water, L/kg | 250 | |
| 120 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 31 to 51 | |
| 28 to 73 |
| Strength to Weight: Bending, points | 25 to 35 | |
| 24 to 46 |
| Thermal Diffusivity, mm2/s | 3.0 | |
| 7.4 |
| Thermal Shock Resistance, points | 27 to 44 | |
| 26 to 67 |
Alloy Composition
| Aluminum (Al), % | 0.2 to 0.8 | |
| 0 |
| Boron (B), % | 0 to 0.0060 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 1.4 to 1.6 |
| Chromium (Cr), % | 17 to 21 | |
| 11 to 13 |
| Cobalt (Co), % | 0 to 1.0 | |
| 2.5 to 3.5 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 to 0.25 |
| Iron (Fe), % | 11.1 to 24.6 | |
| 77.9 to 84.4 |
| Manganese (Mn), % | 0 to 0.35 | |
| 0 to 0.6 |
| Molybdenum (Mo), % | 2.8 to 3.3 | |
| 0.7 to 1.2 |
| Nickel (Ni), % | 50 to 55 | |
| 0 to 0.3 |
| Niobium (Nb), % | 4.8 to 5.5 | |
| 0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.35 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0.65 to 1.2 | |
| 0 |
| Vanadium (V), % | 0 | |
| 0 to 1.0 |