Ductile Cast Iron vs. EN 1.5418 Steel
Both ductile cast iron and EN 1.5418 steel are iron alloys. They have a very high 95% of their average alloy composition in common. There are 24 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 EN 1.5418 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 170 to 180 | |
| 190 |
| Poisson's Ratio | 0.28 to 0.31 | |
| 0.29 |
| Shear Modulus, GPa | 64 to 70 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 920 | |
| 490 to 1780 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 290 | |
| 400 |
| Melting Completion (Liquidus), °C | 1160 | |
| 1460 |
| Melting Onset (Solidus), °C | 1120 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 470 |
| Thermal Conductivity, W/m-K | 31 to 36 | |
| 48 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 to 9.4 | |
| 8.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 2.1 |
| Density, g/cm3 | 7.1 to 7.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.5 |
| Embodied Energy, MJ/kg | 21 | |
| 19 |
| Embodied Water, L/kg | 43 | |
| 47 |
Common Calculations
| Stiffness to Weight: Axial, points | 12 to 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 to 26 | |
| 24 |
| Strength to Weight: Axial, points | 17 to 35 | |
| 17 to 63 |
| Strength to Weight: Bending, points | 18 to 29 | |
| 18 to 42 |
| Thermal Diffusivity, mm2/s | 8.9 to 10 | |
| 13 |
| Thermal Shock Resistance, points | 17 to 35 | |
| 14 to 53 |
Alloy Composition
| Carbon (C), % | 3.0 to 3.5 | |
| 0.35 to 0.4 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 93.7 to 95.5 | |
| 97.8 to 98.9 |
| Manganese (Mn), % | 0 | |
| 0.6 to 0.9 |
| Molybdenum (Mo), % | 0 | |
| 0.2 to 0.3 |
| Phosphorus (P), % | 0 to 0.080 | |
| 0 to 0.025 |
| Silicon (Si), % | 1.5 to 2.8 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 | |
| 0 to 0.025 |