AWS E33-31 vs. Ductile Cast Iron
Both AWS E33-31 and ductile cast iron are iron alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is AWS E33-31 and the bottom bar is ductile cast iron.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 170 to 180 |
| Elongation at Break, % | 29 | |
| 2.1 to 20 |
| Poisson's Ratio | 0.27 | |
| 0.28 to 0.31 |
| Shear Modulus, GPa | 81 | |
| 64 to 70 |
| Tensile Strength: Ultimate (UTS), MPa | 810 | |
| 460 to 920 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 270 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1160 |
| Melting Onset (Solidus), °C | 1330 | |
| 1120 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 490 |
| Thermal Expansion, µm/m-K | 14 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 1.9 |
| Density, g/cm3 | 7.9 | |
| 7.1 to 7.5 |
| Embodied Carbon, kg CO2/kg material | 6.0 | |
| 1.5 |
| Embodied Energy, MJ/kg | 86 | |
| 21 |
| Embodied Water, L/kg | 260 | |
| 43 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 12 to 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 to 26 |
| Strength to Weight: Axial, points | 28 | |
| 17 to 35 |
| Strength to Weight: Bending, points | 24 | |
| 18 to 29 |
| Thermal Shock Resistance, points | 19 | |
| 17 to 35 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 3.0 to 3.5 |
| Chromium (Cr), % | 31 to 35 | |
| 0 |
| Copper (Cu), % | 0.4 to 0.8 | |
| 0 |
| Iron (Fe), % | 24.7 to 34.8 | |
| 93.7 to 95.5 |
| Manganese (Mn), % | 2.5 to 4.0 | |
| 0 |
| Molybdenum (Mo), % | 1.0 to 2.0 | |
| 0 |
| Nickel (Ni), % | 30 to 32 | |
| 0 |
| Nitrogen (N), % | 0.3 to 0.5 | |
| 0 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.080 |
| Silicon (Si), % | 0 to 0.9 | |
| 1.5 to 2.8 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 |