Austempered Cast Iron vs. AISI 403 Stainless Steel
Both austempered cast iron and AISI 403 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is austempered cast iron and the bottom bar is AISI 403 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 270 to 490 | |
| 190 to 240 |
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 190 |
| Elongation at Break, % | 1.1 to 13 | |
| 16 to 25 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 62 to 69 | |
| 76 |
| Tensile Strength: Ultimate (UTS), MPa | 860 to 1800 | |
| 530 to 780 |
| Tensile Strength: Yield (Proof), MPa | 560 to 1460 | |
| 280 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 270 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1450 |
| Melting Onset (Solidus), °C | 1340 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 480 |
| Thermal Conductivity, W/m-K | 42 | |
| 28 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 6.5 |
| Density, g/cm3 | 7.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 1.9 |
| Embodied Energy, MJ/kg | 25 | |
| 27 |
| Embodied Water, L/kg | 48 | |
| 99 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 19 to 95 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 880 to 3970 | |
| 210 to 840 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 32 to 66 | |
| 19 to 28 |
| Strength to Weight: Bending, points | 27 to 44 | |
| 19 to 24 |
| Thermal Diffusivity, mm2/s | 11 | |
| 7.6 |
| Thermal Shock Resistance, points | 25 to 53 | |
| 20 to 29 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.050 | |
| 0 |
| Arsenic (As), % | 0 to 0.020 | |
| 0 |
| Carbon (C), % | 3.4 to 3.8 | |
| 0 to 0.15 |
| Chromium (Cr), % | 0 to 0.1 | |
| 11.5 to 13 |
| Copper (Cu), % | 0 to 0.8 | |
| 0 |
| Iron (Fe), % | 89.6 to 94 | |
| 84.7 to 88.5 |
| Magnesium (Mg), % | 0 to 0.040 | |
| 0 |
| Manganese (Mn), % | 0.3 to 0.4 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.3 | |
| 0 |
| Nickel (Ni), % | 0 to 2.0 | |
| 0 to 0.6 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Selenium (Se), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 2.3 to 2.7 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 to 0.030 |
| Tin (Sn), % | 0 to 0.020 | |
| 0 |
| Vanadium (V), % | 0 to 0.1 | |
| 0 |