Grey Cast Iron vs. SAE-AISI 1090 Steel
Both grey cast iron and SAE-AISI 1090 steel are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is grey cast iron and the bottom bar is SAE-AISI 1090 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 300 | |
| 220 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 190 |
| Elongation at Break, % | 9.6 | |
| 11 |
| Fatigue Strength, MPa | 69 to 170 | |
| 320 to 380 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 69 | |
| 72 |
| Shear Strength, MPa | 180 to 610 | |
| 470 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 160 to 450 | |
| 790 to 950 |
| Tensile Strength: Yield (Proof), MPa | 98 to 290 | |
| 520 to 610 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 240 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1450 |
| Melting Onset (Solidus), °C | 1180 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 470 |
| Thermal Conductivity, W/m-K | 46 | |
| 50 |
| Thermal Expansion, µm/m-K | 11 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.9 | |
| 8.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 1.8 |
| Density, g/cm3 | 7.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.4 |
| Embodied Energy, MJ/kg | 21 | |
| 19 |
| Embodied Water, L/kg | 44 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 13 to 37 | |
| 82 to 91 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 27 to 240 | |
| 730 to 1000 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 5.8 to 17 | |
| 28 to 34 |
| Strength to Weight: Bending, points | 8.7 to 17 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 13 | |
| 13 |
| Thermal Shock Resistance, points | 6.0 to 17 | |
| 25 to 31 |
Alloy Composition
| Carbon (C), % | 3.1 to 3.4 | |
| 0.85 to 1.0 |
| Iron (Fe), % | 92.1 to 93.9 | |
| 98 to 98.6 |
| Manganese (Mn), % | 0.5 to 0.7 | |
| 0.6 to 0.9 |
| Phosphorus (P), % | 0 to 0.9 | |
| 0 to 0.040 |
| Silicon (Si), % | 2.5 to 2.8 | |
| 0 |
| Sulfur (S), % | 0 to 0.15 | |
| 0 to 0.050 |