Austempered Cast Iron vs. ASTM A217 Cast Steel
Both austempered cast iron and ASTM A217 cast steel are iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is austempered cast iron and the bottom bar is ASTM A217 cast steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 270 to 490 | |
| 160 to 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 190 |
| Elongation at Break, % | 1.1 to 13 | |
| 21 to 27 |
| Poisson's Ratio | 0.29 | |
| 0.28 to 0.29 |
| Shear Modulus, GPa | 62 to 69 | |
| 73 to 75 |
| Tensile Strength: Ultimate (UTS), MPa | 860 to 1800 | |
| 540 to 710 |
| Tensile Strength: Yield (Proof), MPa | 560 to 1460 | |
| 270 to 460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 to 270 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1450 to 1460 |
| Melting Onset (Solidus), °C | 1340 | |
| 1410 to 1420 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 470 |
| Thermal Conductivity, W/m-K | 42 | |
| 26 to 50 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 2.4 to 7.0 |
| Density, g/cm3 | 7.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 1.5 to 2.1 |
| Embodied Energy, MJ/kg | 25 | |
| 20 to 28 |
| Embodied Water, L/kg | 48 | |
| 47 to 87 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 19 to 95 | |
| 110 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 880 to 3970 | |
| 190 to 570 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 to 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 to 25 |
| Strength to Weight: Axial, points | 32 to 66 | |
| 19 to 25 |
| Strength to Weight: Bending, points | 27 to 44 | |
| 19 to 23 |
| Thermal Diffusivity, mm2/s | 11 | |
| 6.9 to 14 |
| Thermal Shock Resistance, points | 25 to 53 | |
| 16 to 20 |