Nickel 718 vs. Grade TDSiCr Steel
Nickel 718 belongs to the nickel alloys classification, while grade TDSiCr steel belongs to the iron alloys. 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 grade TDSiCr steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 34 to 64 | |
| 48 |
| Shear Modulus, GPa | 75 | |
| 80 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 1530 | |
| 1950 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 980 | |
| 410 |
| Melting Completion (Liquidus), °C | 1340 | |
| 1440 |
| Melting Onset (Solidus), °C | 1260 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 480 |
| Thermal Conductivity, W/m-K | 11 | |
| 46 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.4 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.5 | |
| 8.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 75 | |
| 2.2 |
| Density, g/cm3 | 8.3 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 13 | |
| 1.5 |
| Embodied Energy, MJ/kg | 190 | |
| 20 |
| Embodied Water, L/kg | 250 | |
| 48 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 31 to 51 | |
| 70 |
| Strength to Weight: Bending, points | 25 to 35 | |
| 45 |
| Thermal Diffusivity, mm2/s | 3.0 | |
| 12 |
| Thermal Shock Resistance, points | 27 to 44 | |
| 58 |
Alloy Composition
| Aluminum (Al), % | 0.2 to 0.8 | |
| 0 |
| Boron (B), % | 0 to 0.0060 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0.5 to 0.6 |
| Chromium (Cr), % | 17 to 21 | |
| 0.5 to 0.8 |
| Cobalt (Co), % | 0 to 1.0 | |
| 0 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 to 0.1 |
| Iron (Fe), % | 11.1 to 24.6 | |
| 96.6 to 97.8 |
| Manganese (Mn), % | 0 to 0.35 | |
| 0.5 to 0.9 |
| Molybdenum (Mo), % | 2.8 to 3.3 | |
| 0 |
| Nickel (Ni), % | 50 to 55 | |
| 0 |
| Niobium (Nb), % | 4.8 to 5.5 | |
| 0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.35 | |
| 1.2 to 1.6 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.020 |
| Titanium (Ti), % | 0.65 to 1.2 | |
| 0 |