Nickel 684 vs. EN 1.4122 Stainless Steel
Nickel 684 belongs to the nickel alloys classification, while EN 1.4122 stainless steel belongs to the iron alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 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 nickel 684 and the bottom bar is EN 1.4122 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 11 | |
| 14 |
| Fatigue Strength, MPa | 390 | |
| 260 to 360 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 77 |
| Shear Strength, MPa | 710 | |
| 480 to 520 |
| Tensile Strength: Ultimate (UTS), MPa | 1190 | |
| 790 to 850 |
| Tensile Strength: Yield (Proof), MPa | 800 | |
| 450 to 630 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 1000 | |
| 870 |
| Melting Completion (Liquidus), °C | 1370 | |
| 1440 |
| Melting Onset (Solidus), °C | 1320 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Expansion, µm/m-K | 13 | |
| 10 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 75 | |
| 9.5 |
| Density, g/cm3 | 8.3 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 2.4 |
| Embodied Energy, MJ/kg | 140 | |
| 33 |
| Embodied Water, L/kg | 360 | |
| 120 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 93 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1610 | |
| 520 to 1000 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 40 | |
| 28 to 31 |
| Strength to Weight: Bending, points | 30 | |
| 25 to 26 |
| Thermal Shock Resistance, points | 34 | |
| 28 to 30 |
Alloy Composition
| Aluminum (Al), % | 2.5 to 3.3 | |
| 0 |
| Boron (B), % | 0.0030 to 0.010 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 0.33 to 0.45 |
| Chromium (Cr), % | 15 to 20 | |
| 15.5 to 17.5 |
| Cobalt (Co), % | 13 to 20 | |
| 0 |
| Copper (Cu), % | 0 to 0.15 | |
| 0 |
| Iron (Fe), % | 0 to 4.0 | |
| 77.2 to 83.4 |
| Manganese (Mn), % | 0 to 0.75 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 3.0 to 5.0 | |
| 0.8 to 1.3 |
| Nickel (Ni), % | 42.7 to 64 | |
| 0 to 1.0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |
| Titanium (Ti), % | 2.5 to 3.3 | |
| 0 |