Ductile Cast Iron vs. EN 1.4945 Stainless Steel
Both ductile cast iron and EN 1.4945 stainless steel are iron alloys. They have 62% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is ductile cast iron and the bottom bar is EN 1.4945 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 310 | |
| 200 to 220 |
| Elastic (Young's, Tensile) Modulus, GPa | 170 to 180 | |
| 200 |
| Elongation at Break, % | 2.1 to 20 | |
| 19 to 34 |
| Poisson's Ratio | 0.28 to 0.31 | |
| 0.28 |
| Shear Modulus, GPa | 64 to 70 | |
| 77 |
| Shear Strength, MPa | 420 to 800 | |
| 430 to 460 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 920 | |
| 640 to 740 |
| Tensile Strength: Yield (Proof), MPa | 310 to 670 | |
| 290 to 550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 290 | |
| 920 |
| Melting Completion (Liquidus), °C | 1160 | |
| 1490 |
| Melting Onset (Solidus), °C | 1120 | |
| 1440 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 470 |
| Thermal Conductivity, W/m-K | 31 to 36 | |
| 14 |
| Thermal Expansion, µm/m-K | 11 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 to 9.4 | |
| 3.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 30 |
| Density, g/cm3 | 7.1 to 7.5 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 5.0 |
| Embodied Energy, MJ/kg | 21 | |
| 73 |
| Embodied Water, L/kg | 43 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 17 to 80 | |
| 130 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 to 1330 | |
| 210 to 760 |
| Stiffness to Weight: Axial, points | 12 to 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 to 26 | |
| 24 |
| Strength to Weight: Axial, points | 17 to 35 | |
| 22 to 25 |
| Strength to Weight: Bending, points | 18 to 29 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 8.9 to 10 | |
| 3.7 |
| Thermal Shock Resistance, points | 17 to 35 | |
| 14 to 16 |
Alloy Composition
| Carbon (C), % | 3.0 to 3.5 | |
| 0.040 to 0.1 |
| Chromium (Cr), % | 0 | |
| 15.5 to 17.5 |
| Iron (Fe), % | 93.7 to 95.5 | |
| 57.9 to 65.7 |
| Manganese (Mn), % | 0 | |
| 0 to 1.5 |
| Nickel (Ni), % | 0 | |
| 15.5 to 17.5 |
| Niobium (Nb), % | 0 | |
| 0.4 to 1.2 |
| Nitrogen (N), % | 0 | |
| 0.060 to 0.14 |
| Phosphorus (P), % | 0 to 0.080 | |
| 0 to 0.035 |
| Silicon (Si), % | 1.5 to 2.8 | |
| 0.3 to 0.6 |
| Sulfur (S), % | 0 | |
| 0 to 0.015 |
| Tungsten (W), % | 0 | |
| 2.5 to 3.5 |