S17700 Stainless Steel vs. 50Cr-50Ni Alloy
S17700 stainless steel belongs to the iron alloys classification, while 50Cr-50Ni alloy belongs to the otherwise unclassified metals. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is S17700 stainless steel and the bottom bar is 50Cr-50Ni alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 210 |
| Elongation at Break, % | 1.0 to 23 | |
| 5.7 |
| Poisson's Ratio | 0.28 | |
| 0.26 |
| Shear Modulus, GPa | 76 | |
| 84 |
| Tensile Strength: Ultimate (UTS), MPa | 1180 to 1650 | |
| 620 |
| Tensile Strength: Yield (Proof), MPa | 430 to 1210 | |
| 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 350 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 490 |
| Thermal Expansion, µm/m-K | 11 | |
| 15 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 50 |
| Density, g/cm3 | 7.7 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 7.9 |
| Embodied Energy, MJ/kg | 40 | |
| 110 |
| Embodied Water, L/kg | 150 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 15 to 210 | |
| 31 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 460 to 3750 | |
| 350 |
| Stiffness to Weight: Axial, points | 14 | |
| 15 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 42 to 59 | |
| 21 |
| Strength to Weight: Bending, points | 32 to 40 | |
| 20 |
| Thermal Shock Resistance, points | 39 to 54 | |
| 14 |
Alloy Composition
| Aluminum (Al), % | 0.75 to 1.5 | |
| 0 to 0.25 |
| Carbon (C), % | 0 to 0.090 | |
| 0 to 0.1 |
| Chromium (Cr), % | 16 to 18 | |
| 48 to 52 |
| Iron (Fe), % | 70.5 to 76.8 | |
| 0 to 1.0 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 0.3 |
| Nickel (Ni), % | 6.5 to 7.8 | |
| 44.5 to 52 |
| Nitrogen (N), % | 0 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.020 |
| Titanium (Ti), % | 0 | |
| 0 to 0.5 |