Austempered Cast Iron vs. ASTM A209 Steel
Both austempered cast iron and ASTM A209 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 A209 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 270 to 490 | |
| 140 to 150 |
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 190 |
| Elongation at Break, % | 1.1 to 13 | |
| 34 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 62 to 69 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 860 to 1800 | |
| 420 to 460 |
| Tensile Strength: Yield (Proof), MPa | 560 to 1460 | |
| 220 to 250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1470 |
| Melting Onset (Solidus), °C | 1340 | |
| 1420 to 1430 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 470 |
| Thermal Conductivity, W/m-K | 42 | |
| 50 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 2.4 |
| Density, g/cm3 | 7.5 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 1.5 |
| Embodied Energy, MJ/kg | 25 | |
| 20 |
| Embodied Water, L/kg | 48 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 19 to 95 | |
| 120 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 880 to 3970 | |
| 130 to 170 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 32 to 66 | |
| 15 to 16 |
| Strength to Weight: Bending, points | 27 to 44 | |
| 16 to 17 |
| Thermal Diffusivity, mm2/s | 11 | |
| 13 |
| Thermal Shock Resistance, points | 25 to 53 | |
| 12 to 14 |