EN 1.4371 Stainless Steel vs. Nickel 684
EN 1.4371 stainless steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. They have a modest 24% 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 (7, in this case) are not shown.
For each property being compared, the top bar is EN 1.4371 stainless steel and the bottom bar is nickel 684.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 to 230 | |
| 310 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 45 to 51 | |
| 11 |
| Fatigue Strength, MPa | 290 to 340 | |
| 390 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 76 |
| Shear Strength, MPa | 520 to 540 | |
| 710 |
| Tensile Strength: Ultimate (UTS), MPa | 740 to 750 | |
| 1190 |
| Tensile Strength: Yield (Proof), MPa | 320 to 340 | |
| 800 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 880 | |
| 1000 |
| Melting Completion (Liquidus), °C | 1410 | |
| 1370 |
| Melting Onset (Solidus), °C | 1370 | |
| 1320 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 75 |
| Density, g/cm3 | 7.7 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 10 |
| Embodied Energy, MJ/kg | 38 | |
| 140 |
| Embodied Water, L/kg | 140 | |
| 360 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 270 to 310 | |
| 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 250 to 300 | |
| 1610 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 23 |
| Strength to Weight: Axial, points | 27 | |
| 40 |
| Strength to Weight: Bending, points | 24 | |
| 30 |
| Thermal Shock Resistance, points | 16 | |
| 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), % | 16 to 17.5 | |
| 15 to 20 |
| Cobalt (Co), % | 0 | |
| 13 to 20 |
| Copper (Cu), % | 0 to 1.0 | |
| 0 to 0.15 |
| Iron (Fe), % | 66.7 to 74.4 | |
| 0 to 4.0 |
| Manganese (Mn), % | 6.0 to 8.0 | |
| 0 to 0.75 |
| Molybdenum (Mo), % | 0 | |
| 3.0 to 5.0 |
| Nickel (Ni), % | 3.5 to 5.5 | |
| 42.7 to 64 |
| Nitrogen (N), % | 0.15 to 0.25 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |
| Titanium (Ti), % | 0 | |
| 2.5 to 3.3 |