AISI 440B Stainless Steel vs. Grade CY40 Nickel
AISI 440B stainless steel belongs to the iron alloys classification, while grade CY40 nickel belongs to the nickel alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 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 440B stainless steel and the bottom bar is grade CY40 nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 3.0 to 18 | |
| 34 |
| Fatigue Strength, MPa | 260 to 850 | |
| 160 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 74 |
| Tensile Strength: Ultimate (UTS), MPa | 740 to 1930 | |
| 540 |
| Tensile Strength: Yield (Proof), MPa | 430 to 1860 | |
| 220 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 330 |
| Maximum Temperature: Mechanical, °C | 870 | |
| 960 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1350 |
| Melting Onset (Solidus), °C | 1370 | |
| 1300 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 23 | |
| 14 |
| Thermal Expansion, µm/m-K | 10 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.5 | |
| 1.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
| 1.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 55 |
| Density, g/cm3 | 7.7 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 2.2 | |
| 9.1 |
| Embodied Energy, MJ/kg | 31 | |
| 130 |
| Embodied Water, L/kg | 120 | |
| 260 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 57 to 110 | |
| 150 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 23 |
| Strength to Weight: Axial, points | 27 to 70 | |
| 18 |
| Strength to Weight: Bending, points | 24 to 45 | |
| 18 |
| Thermal Diffusivity, mm2/s | 6.1 | |
| 3.7 |
| Thermal Shock Resistance, points | 27 to 70 | |
| 16 |
Alloy Composition
| Carbon (C), % | 0.75 to 1.0 | |
| 0 to 0.4 |
| Chromium (Cr), % | 16 to 18 | |
| 14 to 17 |
| Iron (Fe), % | 78.2 to 83.3 | |
| 0 to 11 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0 to 0.75 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 67 to 86 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 3.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |