Nickel 625 vs. S15500 Stainless Steel
Nickel 625 belongs to the nickel alloys classification, while S15500 stainless steel belongs to the iron alloys. They have a modest 23% 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 (7, in this case) are not shown.
For each property being compared, the top bar is nickel 625 and the bottom bar is S15500 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 33 to 34 | |
| 6.8 to 16 |
| Fatigue Strength, MPa | 240 to 320 | |
| 350 to 650 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 79 | |
| 75 |
| Shear Strength, MPa | 530 to 600 | |
| 540 to 870 |
| Tensile Strength: Ultimate (UTS), MPa | 790 to 910 | |
| 890 to 1490 |
| Tensile Strength: Yield (Proof), MPa | 320 to 450 | |
| 590 to 1310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 330 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 980 | |
| 820 |
| Melting Completion (Liquidus), °C | 1350 | |
| 1430 |
| Melting Onset (Solidus), °C | 1290 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 480 |
| Thermal Conductivity, W/m-K | 11 | |
| 17 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.3 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.4 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 80 | |
| 13 |
| Density, g/cm3 | 8.6 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 14 | |
| 2.7 |
| Embodied Energy, MJ/kg | 190 | |
| 39 |
| Embodied Water, L/kg | 290 | |
| 130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 220 to 250 | |
| 98 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 260 to 490 | |
| 890 to 4460 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 26 to 29 | |
| 32 to 53 |
| Strength to Weight: Bending, points | 22 to 24 | |
| 26 to 37 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 4.6 |
| Thermal Shock Resistance, points | 22 to 25 | |
| 30 to 50 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.4 | |
| 0 |
| Carbon (C), % | 0 to 0.1 | |
| 0 to 0.070 |
| Chromium (Cr), % | 20 to 23 | |
| 14 to 15.5 |
| Cobalt (Co), % | 0 to 1.0 | |
| 0 |
| Copper (Cu), % | 0 | |
| 2.5 to 4.5 |
| Iron (Fe), % | 0 to 5.0 | |
| 71.9 to 79.9 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 8.0 to 10 | |
| 0 |
| Nickel (Ni), % | 58 to 68.9 | |
| 3.5 to 5.5 |
| Niobium (Nb), % | 3.2 to 4.2 | |
| 0.15 to 0.45 |
| 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 |