Nickel 684 vs. AISI 316N Stainless Steel
Nickel 684 belongs to the nickel alloys classification, while AISI 316N stainless steel belongs to the iron alloys. They have a modest 34% 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 nickel 684 and the bottom bar is AISI 316N stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 310 | |
| 190 to 350 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 11 | |
| 9.0 to 39 |
| Fatigue Strength, MPa | 390 | |
| 230 to 450 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 78 |
| Shear Strength, MPa | 710 | |
| 420 to 690 |
| Tensile Strength: Ultimate (UTS), MPa | 1190 | |
| 620 to 1160 |
| Tensile Strength: Yield (Proof), MPa | 800 | |
| 270 to 870 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 1000 | |
| 940 |
| Melting Completion (Liquidus), °C | 1370 | |
| 1440 |
| Melting Onset (Solidus), °C | 1320 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 75 | |
| 19 |
| Density, g/cm3 | 8.3 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 3.9 |
| Embodied Energy, MJ/kg | 140 | |
| 53 |
| Embodied Water, L/kg | 360 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 95 to 230 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1610 | |
| 180 to 1880 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 40 | |
| 22 to 41 |
| Strength to Weight: Bending, points | 30 | |
| 20 to 31 |
| Thermal Shock Resistance, points | 34 | |
| 14 to 26 |
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 to 0.080 |
| Chromium (Cr), % | 15 to 20 | |
| 16 to 18 |
| Cobalt (Co), % | 13 to 20 | |
| 0 |
| Copper (Cu), % | 0 to 0.15 | |
| 0 |
| Iron (Fe), % | 0 to 4.0 | |
| 61.9 to 71.9 |
| Manganese (Mn), % | 0 to 0.75 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 3.0 to 5.0 | |
| 2.0 to 3.0 |
| Nickel (Ni), % | 42.7 to 64 | |
| 10 to 14 |
| Nitrogen (N), % | 0 | |
| 0.1 to 0.16 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |
| Titanium (Ti), % | 2.5 to 3.3 | |
| 0 |