EN 1.4424 Stainless Steel vs. Nickel 684
EN 1.4424 stainless steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 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 1.4424 stainless steel and the bottom bar is nickel 684.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 230 | |
| 310 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 28 | |
| 11 |
| Fatigue Strength, MPa | 350 to 370 | |
| 390 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 78 | |
| 76 |
| Shear Strength, MPa | 520 | |
| 710 |
| Tensile Strength: Ultimate (UTS), MPa | 800 | |
| 1190 |
| Tensile Strength: Yield (Proof), MPa | 480 to 500 | |
| 800 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 960 | |
| 1000 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1370 |
| Melting Onset (Solidus), °C | 1390 | |
| 1320 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 75 |
| Density, g/cm3 | 7.7 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 3.4 | |
| 10 |
| Embodied Energy, MJ/kg | 46 | |
| 140 |
| Embodied Water, L/kg | 140 | |
| 360 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 to 200 | |
| 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 580 to 640 | |
| 1610 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 23 |
| Strength to Weight: Axial, points | 29 | |
| 40 |
| Strength to Weight: Bending, points | 25 | |
| 30 |
| Thermal Shock Resistance, points | 23 | |
| 34 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 2.5 to 3.3 |
| Boron (B), % | 0 | |
| 0.0030 to 0.010 |
| Carbon (C), % | 0 to 0.030 | |
| 0 to 0.15 |
| Chromium (Cr), % | 18 to 19 | |
| 15 to 20 |
| Cobalt (Co), % | 0 | |
| 13 to 20 |
| Copper (Cu), % | 0 | |
| 0 to 0.15 |
| Iron (Fe), % | 68.6 to 72.4 | |
| 0 to 4.0 |
| Manganese (Mn), % | 1.2 to 2.0 | |
| 0 to 0.75 |
| Molybdenum (Mo), % | 2.5 to 3.0 | |
| 3.0 to 5.0 |
| Nickel (Ni), % | 4.5 to 5.2 | |
| 42.7 to 64 |
| Nitrogen (N), % | 0.050 to 0.1 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.015 |
| Silicon (Si), % | 1.4 to 2.0 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |
| Titanium (Ti), % | 0 | |
| 2.5 to 3.3 |