S45500 Stainless Steel vs. Nickel 718
S45500 stainless steel belongs to the iron alloys classification, while nickel 718 belongs to the nickel alloys. They have 40% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is S45500 stainless steel and the bottom bar is nickel 718.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 3.4 to 11 | |
| 12 to 50 |
| Fatigue Strength, MPa | 570 to 890 | |
| 460 to 760 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Reduction in Area, % | 34 to 45 | |
| 34 to 64 |
| Rockwell C Hardness | 32 to 54 | |
| 40 |
| Shear Modulus, GPa | 75 | |
| 75 |
| Shear Strength, MPa | 790 to 1090 | |
| 660 to 950 |
| Tensile Strength: Ultimate (UTS), MPa | 1370 to 1850 | |
| 930 to 1530 |
| Tensile Strength: Yield (Proof), MPa | 1240 to 1700 | |
| 510 to 1330 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 310 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 980 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1340 |
| Melting Onset (Solidus), °C | 1400 | |
| 1260 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 450 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 17 | |
| 75 |
| Density, g/cm3 | 7.9 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 3.8 | |
| 13 |
| Embodied Energy, MJ/kg | 57 | |
| 190 |
| Embodied Water, L/kg | 120 | |
| 250 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 45 to 190 | |
| 140 to 390 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 48 to 65 | |
| 31 to 51 |
| Strength to Weight: Bending, points | 35 to 42 | |
| 25 to 35 |
| Thermal Shock Resistance, points | 48 to 64 | |
| 27 to 44 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.2 to 0.8 |
| Boron (B), % | 0 | |
| 0 to 0.0060 |
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.080 |
| Chromium (Cr), % | 11 to 12.5 | |
| 17 to 21 |
| Cobalt (Co), % | 0 | |
| 0 to 1.0 |
| Copper (Cu), % | 1.5 to 2.5 | |
| 0 to 0.3 |
| Iron (Fe), % | 71.5 to 79.2 | |
| 11.1 to 24.6 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0 to 0.35 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 2.8 to 3.3 |
| Nickel (Ni), % | 7.5 to 9.5 | |
| 50 to 55 |
| Niobium (Nb), % | 0 to 0.5 | |
| 4.8 to 5.5 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.35 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |
| Tantalum (Ta), % | 0 to 0.5 | |
| 0 |
| Titanium (Ti), % | 0.8 to 1.4 | |
| 0.65 to 1.2 |