Nickel 685 vs. AISI 316 Stainless Steel
Nickel 685 belongs to the nickel alloys classification, while AISI 316 stainless steel belongs to the iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is nickel 685 and the bottom bar is AISI 316 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 350 | |
| 160 to 360 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 17 | |
| 8.0 to 55 |
| Fatigue Strength, MPa | 470 | |
| 210 to 430 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Reduction in Area, % | 20 | |
| 80 |
| Shear Modulus, GPa | 77 | |
| 78 |
| Shear Strength, MPa | 770 | |
| 350 to 690 |
| Tensile Strength: Ultimate (UTS), MPa | 1250 | |
| 520 to 1180 |
| Tensile Strength: Yield (Proof), MPa | 850 | |
| 230 to 850 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 1000 | |
| 590 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1400 |
| Melting Onset (Solidus), °C | 1330 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 470 |
| Thermal Conductivity, W/m-K | 13 | |
| 15 |
| Thermal Expansion, µm/m-K | 12 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 75 | |
| 19 |
| Density, g/cm3 | 8.4 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 3.9 |
| Embodied Energy, MJ/kg | 140 | |
| 53 |
| Embodied Water, L/kg | 340 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 | |
| 85 to 260 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1820 | |
| 130 to 1820 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 42 | |
| 18 to 41 |
| Strength to Weight: Bending, points | 31 | |
| 18 to 31 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 4.1 |
| Thermal Shock Resistance, points | 37 | |
| 11 to 26 |
Alloy Composition
| Aluminum (Al), % | 1.2 to 1.6 | |
| 0 |
| Boron (B), % | 0.0030 to 0.010 | |
| 0 |
| Carbon (C), % | 0.030 to 0.1 | |
| 0 to 0.080 |
| Chromium (Cr), % | 18 to 21 | |
| 16 to 18 |
| Cobalt (Co), % | 12 to 15 | |
| 0 |
| Copper (Cu), % | 0 to 0.5 | |
| 0 |
| Iron (Fe), % | 0 to 2.0 | |
| 62 to 72 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 3.5 to 5.0 | |
| 2.0 to 3.0 |
| Nickel (Ni), % | 49.6 to 62.5 | |
| 10 to 14 |
| Nitrogen (N), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Titanium (Ti), % | 2.8 to 3.3 | |
| 0 |
| Zinc (Zn), % | 0.020 to 0.12 | |
| 0 |