ASTM A203 Steel vs. Austempered Cast Iron
Both ASTM A203 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 (5, in this case) are not shown.
For each property being compared, the top bar is ASTM A203 steel and the bottom bar is austempered cast iron.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 180 | |
| 270 to 490 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 180 |
| Elongation at Break, % | 22 to 26 | |
| 1.1 to 13 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 62 to 69 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 590 | |
| 860 to 1800 |
| Tensile Strength: Yield (Proof), MPa | 290 to 390 | |
| 560 to 1460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1380 |
| Melting Onset (Solidus), °C | 1420 | |
| 1340 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 490 |
| Thermal Conductivity, W/m-K | 52 | |
| 42 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.2 to 4.0 | |
| 2.9 |
| Density, g/cm3 | 7.9 | |
| 7.5 |
| Embodied Carbon, kg CO2/kg material | 1.6 to 1.7 | |
| 1.8 |
| Embodied Energy, MJ/kg | 21 to 23 | |
| 25 |
| Embodied Water, L/kg | 50 to 52 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 19 to 95 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 230 to 410 | |
| 880 to 3970 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 32 to 66 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 27 to 44 |
| Thermal Diffusivity, mm2/s | 14 | |
| 11 |
| Thermal Shock Resistance, points | 15 to 17 | |
| 25 to 53 |