Grey Cast Iron vs. Grade 250 Maraging Steel
Both grey cast iron and grade 250 maraging steel are iron alloys. They have 69% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is grey cast iron and the bottom bar is grade 250 maraging steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 570 to 1290 | |
| 730 to 1660 |
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 190 |
| Elongation at Break, % | 9.6 | |
| 7.3 to 17 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 69 | |
| 75 |
| Shear Strength, MPa | 180 to 610 | |
| 600 to 1060 |
| Tensile Strength: Ultimate (UTS), MPa | 160 to 450 | |
| 970 to 1800 |
| Tensile Strength: Yield (Proof), MPa | 98 to 290 | |
| 660 to 1740 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 270 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1480 |
| Melting Onset (Solidus), °C | 1180 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 450 |
| Thermal Expansion, µm/m-K | 11 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 32 |
| Density, g/cm3 | 7.5 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 4.9 |
| Embodied Energy, MJ/kg | 21 | |
| 65 |
| Embodied Water, L/kg | 44 | |
| 140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 13 to 37 | |
| 130 to 150 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 23 |
| Strength to Weight: Axial, points | 5.8 to 17 | |
| 33 to 61 |
| Strength to Weight: Bending, points | 8.7 to 17 | |
| 26 to 40 |
| Thermal Shock Resistance, points | 6.0 to 17 | |
| 29 to 54 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.050 to 0.15 |
| Boron (B), % | 0 | |
| 0 to 0.0030 |
| Calcium (Ca), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 3.1 to 3.4 | |
| 0 to 0.030 |
| Cobalt (Co), % | 0 | |
| 7.0 to 8.5 |
| Iron (Fe), % | 92.1 to 93.9 | |
| 66.3 to 71.1 |
| Manganese (Mn), % | 0.5 to 0.7 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 0 | |
| 4.6 to 5.2 |
| Nickel (Ni), % | 0 | |
| 17 to 19 |
| Phosphorus (P), % | 0 to 0.9 | |
| 0 to 0.010 |
| Silicon (Si), % | 2.5 to 2.8 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.15 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 | |
| 0.3 to 0.5 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.020 |