Austempered Cast Iron vs. ASTM A148 Cast Steel
Both austempered cast iron and ASTM A148 cast steel are iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is austempered cast iron and the bottom bar is ASTM A148 cast steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 270 to 490 | |
| 190 to 390 |
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 190 |
| Elongation at Break, % | 1.1 to 13 | |
| 5.7 to 25 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 62 to 69 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 860 to 1800 | |
| 630 to 1300 |
| Tensile Strength: Yield (Proof), MPa | 560 to 1460 | |
| 390 to 1160 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1460 |
| Melting Onset (Solidus), °C | 1340 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 470 |
| Thermal Conductivity, W/m-K | 42 | |
| 37 to 47 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 2.3 to 3.3 |
| Density, g/cm3 | 7.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 1.5 to 1.7 |
| Embodied Energy, MJ/kg | 25 | |
| 20 to 22 |
| Embodied Water, L/kg | 48 | |
| 48 to 53 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 19 to 95 | |
| 71 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 880 to 3970 | |
| 400 to 3570 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 32 to 66 | |
| 22 to 46 |
| Strength to Weight: Bending, points | 27 to 44 | |
| 21 to 34 |
| Thermal Diffusivity, mm2/s | 11 | |
| 9.9 to 13 |
| Thermal Shock Resistance, points | 25 to 53 | |
| 18 to 38 |