Nickel 625 vs. S17700 Stainless Steel
Nickel 625 belongs to the nickel alloys classification, while S17700 stainless steel belongs to the iron alloys. They have a modest 27% 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 (5, in this case) are not shown.
For each property being compared, the top bar is nickel 625 and the bottom bar is S17700 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 33 to 34 | |
| 1.0 to 23 |
| Fatigue Strength, MPa | 240 to 320 | |
| 290 to 560 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 79 | |
| 76 |
| Shear Strength, MPa | 530 to 600 | |
| 740 to 940 |
| Tensile Strength: Ultimate (UTS), MPa | 790 to 910 | |
| 1180 to 1650 |
| Tensile Strength: Yield (Proof), MPa | 320 to 450 | |
| 430 to 1210 |
Thermal Properties
| Latent Heat of Fusion, J/g | 330 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 980 | |
| 890 |
| Melting Completion (Liquidus), °C | 1350 | |
| 1440 |
| Melting Onset (Solidus), °C | 1290 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 480 |
| Thermal Conductivity, W/m-K | 11 | |
| 15 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.3 | |
| 2.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.4 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 80 | |
| 13 |
| Density, g/cm3 | 8.6 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 14 | |
| 2.8 |
| Embodied Energy, MJ/kg | 190 | |
| 40 |
| Embodied Water, L/kg | 290 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 220 to 250 | |
| 15 to 210 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 260 to 490 | |
| 460 to 3750 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 26 to 29 | |
| 42 to 59 |
| Strength to Weight: Bending, points | 22 to 24 | |
| 32 to 40 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 4.1 |
| Thermal Shock Resistance, points | 22 to 25 | |
| 39 to 54 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.4 | |
| 0.75 to 1.5 |
| Carbon (C), % | 0 to 0.1 | |
| 0 to 0.090 |
| Chromium (Cr), % | 20 to 23 | |
| 16 to 18 |
| Cobalt (Co), % | 0 to 1.0 | |
| 0 |
| Iron (Fe), % | 0 to 5.0 | |
| 70.5 to 76.8 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 8.0 to 10 | |
| 0 |
| Nickel (Ni), % | 58 to 68.9 | |
| 6.5 to 7.8 |
| Niobium (Nb), % | 3.2 to 4.2 | |
| 0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 to 0.4 | |
| 0 |