ASTM A732 Cast Steel vs. Austempered Cast Iron
Both ASTM A732 cast steel and austempered cast iron are iron alloys. There are 26 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 ASTM A732 cast steel and the bottom bar is austempered cast iron.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 to 440 | |
| 270 to 490 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 180 |
| Elongation at Break, % | 4.0 to 25 | |
| 1.1 to 13 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 72 to 73 | |
| 62 to 69 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 1470 | |
| 860 to 1800 |
| Tensile Strength: Yield (Proof), MPa | 310 to 1340 | |
| 560 to 1460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 to 260 | |
| 280 |
| Melting Completion (Liquidus), °C | 1440 to 1460 | |
| 1380 |
| Melting Onset (Solidus), °C | 1400 to 1420 | |
| 1340 |
| Specific Heat Capacity, J/kg-K | 470 to 480 | |
| 490 |
| Thermal Conductivity, W/m-K | 39 to 50 | |
| 42 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.0 to 3.8 | |
| 2.9 |
| Density, g/cm3 | 7.8 to 7.9 | |
| 7.5 |
| Embodied Carbon, kg CO2/kg material | 1.4 to 1.7 | |
| 1.8 |
| Embodied Energy, MJ/kg | 19 to 24 | |
| 25 |
| Embodied Water, L/kg | 47 to 54 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 45 to 130 | |
| 19 to 95 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 260 to 4770 | |
| 880 to 3970 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 16 to 52 | |
| 32 to 66 |
| Strength to Weight: Bending, points | 17 to 37 | |
| 27 to 44 |
| Thermal Diffusivity, mm2/s | 10 to 14 | |
| 11 |
| Thermal Shock Resistance, points | 14 to 43 | |
| 25 to 53 |