Ductile Cast Iron vs. S20910 Stainless Steel
Both ductile cast iron and S20910 stainless steel are iron alloys. They have 58% of their average alloy composition in common. There are 28 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 ductile cast iron and the bottom bar is S20910 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 310 | |
| 230 to 290 |
| Elastic (Young's, Tensile) Modulus, GPa | 170 to 180 | |
| 200 |
| Elongation at Break, % | 2.1 to 20 | |
| 14 to 39 |
| Poisson's Ratio | 0.28 to 0.31 | |
| 0.28 |
| Shear Modulus, GPa | 64 to 70 | |
| 79 |
| Shear Strength, MPa | 420 to 800 | |
| 500 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 920 | |
| 780 to 940 |
| Tensile Strength: Yield (Proof), MPa | 310 to 670 | |
| 430 to 810 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 300 |
| Maximum Temperature: Mechanical, °C | 290 | |
| 1080 |
| Melting Completion (Liquidus), °C | 1160 | |
| 1420 |
| Melting Onset (Solidus), °C | 1120 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 480 |
| Thermal Conductivity, W/m-K | 31 to 36 | |
| 13 |
| Thermal Expansion, µm/m-K | 11 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 22 |
| Density, g/cm3 | 7.1 to 7.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 4.8 |
| Embodied Energy, MJ/kg | 21 | |
| 68 |
| Embodied Water, L/kg | 43 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 17 to 80 | |
| 120 to 260 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 to 1330 | |
| 460 to 1640 |
| Stiffness to Weight: Axial, points | 12 to 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 to 26 | |
| 25 |
| Strength to Weight: Axial, points | 17 to 35 | |
| 28 to 33 |
| Strength to Weight: Bending, points | 18 to 29 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 8.9 to 10 | |
| 3.6 |
| Thermal Shock Resistance, points | 17 to 35 | |
| 17 to 21 |
Alloy Composition
| Carbon (C), % | 3.0 to 3.5 | |
| 0 to 0.060 |
| Chromium (Cr), % | 0 | |
| 20.5 to 23.5 |
| Iron (Fe), % | 93.7 to 95.5 | |
| 52.1 to 62.1 |
| Manganese (Mn), % | 0 | |
| 4.0 to 6.0 |
| Molybdenum (Mo), % | 0 | |
| 1.5 to 3.0 |
| Nickel (Ni), % | 0 | |
| 11.5 to 13.5 |
| Niobium (Nb), % | 0 | |
| 0.1 to 0.3 |
| Nitrogen (N), % | 0 | |
| 0.2 to 0.4 |
| Phosphorus (P), % | 0 to 0.080 | |
| 0 to 0.040 |
| Silicon (Si), % | 1.5 to 2.8 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0.1 to 0.3 |