EN 1.4021 Stainless Steel vs. Nickel 685
EN 1.4021 stainless steel belongs to the iron alloys classification, while nickel 685 belongs to the nickel alloys. There are 28 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 EN 1.4021 stainless steel and the bottom bar is nickel 685.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 to 17 | |
| 17 |
| Fatigue Strength, MPa | 240 to 380 | |
| 470 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 76 | |
| 77 |
| Shear Strength, MPa | 390 to 530 | |
| 770 |
| Tensile Strength: Ultimate (UTS), MPa | 630 to 880 | |
| 1250 |
| Tensile Strength: Yield (Proof), MPa | 390 to 670 | |
| 850 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 1000 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1380 |
| Melting Onset (Solidus), °C | 1400 | |
| 1330 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 460 |
| Thermal Conductivity, W/m-K | 30 | |
| 13 |
| Thermal Expansion, µm/m-K | 11 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 75 |
| Density, g/cm3 | 7.7 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 1.9 | |
| 10 |
| Embodied Energy, MJ/kg | 27 | |
| 140 |
| Embodied Water, L/kg | 100 | |
| 340 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 88 to 110 | |
| 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 400 to 1160 | |
| 1820 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 23 |
| Strength to Weight: Axial, points | 23 to 31 | |
| 42 |
| Strength to Weight: Bending, points | 21 to 26 | |
| 31 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 3.3 |
| Thermal Shock Resistance, points | 22 to 31 | |
| 37 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 1.2 to 1.6 |
| Boron (B), % | 0 | |
| 0.0030 to 0.010 |
| Carbon (C), % | 0.16 to 0.25 | |
| 0.030 to 0.1 |
| Chromium (Cr), % | 12 to 14 | |
| 18 to 21 |
| Cobalt (Co), % | 0 | |
| 12 to 15 |
| Copper (Cu), % | 0 | |
| 0 to 0.5 |
| Iron (Fe), % | 83.2 to 87.8 | |
| 0 to 2.0 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 3.5 to 5.0 |
| Nickel (Ni), % | 0 | |
| 49.6 to 62.5 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 | |
| 2.8 to 3.3 |
| Zinc (Zn), % | 0 | |
| 0.020 to 0.12 |