AISI 440C Stainless Steel vs. Nickel 690
AISI 440C stainless steel belongs to the iron alloys classification, while nickel 690 belongs to the nickel alloys. They have a modest 27% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is AISI 440C stainless steel and the bottom bar is nickel 690.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 2.0 to 14 | |
| 3.4 to 34 |
| Fatigue Strength, MPa | 260 to 840 | |
| 180 to 300 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 79 |
| Shear Strength, MPa | 430 to 1120 | |
| 420 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 710 to 1970 | |
| 640 to 990 |
| Tensile Strength: Yield (Proof), MPa | 450 to 1900 | |
| 250 to 760 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 870 | |
| 1010 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1380 |
| Melting Onset (Solidus), °C | 1370 | |
| 1340 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 22 | |
| 14 |
| Thermal Expansion, µm/m-K | 10 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.4 | |
| 1.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.8 | |
| 1.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 50 |
| Density, g/cm3 | 7.7 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 2.2 | |
| 8.2 |
| Embodied Energy, MJ/kg | 31 | |
| 120 |
| Embodied Water, L/kg | 120 | |
| 290 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 39 to 88 | |
| 31 to 170 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 26 to 71 | |
| 21 to 33 |
| Strength to Weight: Bending, points | 23 to 46 | |
| 20 to 27 |
| Thermal Diffusivity, mm2/s | 6.0 | |
| 3.5 |
| Thermal Shock Resistance, points | 26 to 71 | |
| 16 to 25 |
Alloy Composition
| Carbon (C), % | 1.0 to 1.2 | |
| 0 to 0.050 |
| Chromium (Cr), % | 16 to 18 | |
| 27 to 31 |
| Copper (Cu), % | 0 | |
| 0 to 0.5 |
| Iron (Fe), % | 78 to 83.1 | |
| 7.0 to 11 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 0 to 0.75 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 58 to 66 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |