EN 1.6579 Steel vs. Nickel 718
EN 1.6579 steel belongs to the iron alloys classification, while nickel 718 belongs to the nickel alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 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 EN 1.6579 steel and the bottom bar is nickel 718.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 14 | |
| 12 to 50 |
| Fatigue Strength, MPa | 380 to 570 | |
| 460 to 760 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 850 to 980 | |
| 930 to 1530 |
| Tensile Strength: Yield (Proof), MPa | 600 to 910 | |
| 510 to 1330 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 310 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 980 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1340 |
| Melting Onset (Solidus), °C | 1410 | |
| 1260 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 450 |
| Thermal Conductivity, W/m-K | 39 | |
| 11 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.7 | |
| 1.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 | |
| 1.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.7 | |
| 75 |
| Density, g/cm3 | 7.8 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 1.7 | |
| 13 |
| Embodied Energy, MJ/kg | 22 | |
| 190 |
| Embodied Water, L/kg | 56 | |
| 250 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 to 120 | |
| 140 to 390 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 950 to 2210 | |
| 660 to 4560 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 30 to 35 | |
| 31 to 51 |
| Strength to Weight: Bending, points | 25 to 28 | |
| 25 to 35 |
| Thermal Diffusivity, mm2/s | 11 | |
| 3.0 |
| Thermal Shock Resistance, points | 25 to 29 | |
| 27 to 44 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.2 to 0.8 |
| Boron (B), % | 0 | |
| 0 to 0.0060 |
| Carbon (C), % | 0.32 to 0.38 | |
| 0 to 0.080 |
| Chromium (Cr), % | 1.4 to 1.7 | |
| 17 to 21 |
| Cobalt (Co), % | 0 | |
| 0 to 1.0 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 94.2 to 96.1 | |
| 11.1 to 24.6 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 0 to 0.35 |
| Molybdenum (Mo), % | 0.15 to 0.35 | |
| 2.8 to 3.3 |
| Nickel (Ni), % | 1.4 to 1.7 | |
| 50 to 55 |
| Niobium (Nb), % | 0 | |
| 4.8 to 5.5 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.35 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |
| Titanium (Ti), % | 0 | |
| 0.65 to 1.2 |