EN 1.4971 Stainless Steel vs. Automotive Malleable Cast Iron
Both EN 1.4971 stainless steel and automotive malleable cast iron are iron alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is automotive malleable cast iron.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 240 | |
| 130 to 290 |
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 180 |
| Elongation at Break, % | 34 | |
| 1.0 to 10 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 81 | |
| 70 |
| Tensile Strength: Ultimate (UTS), MPa | 800 | |
| 350 to 720 |
| Tensile Strength: Yield (Proof), MPa | 340 | |
| 220 to 590 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 260 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1410 |
| Melting Onset (Solidus), °C | 1410 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 480 |
| Thermal Conductivity, W/m-K | 13 | |
| 41 |
| Thermal Expansion, µm/m-K | 15 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 70 | |
| 1.9 |
| Density, g/cm3 | 8.4 | |
| 7.6 |
| Embodied Carbon, kg CO2/kg material | 7.6 | |
| 1.5 |
| Embodied Energy, MJ/kg | 110 | |
| 20 |
| Embodied Water, L/kg | 300 | |
| 45 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 220 | |
| 6.8 to 30 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 | |
| 130 to 950 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 26 | |
| 13 to 26 |
| Strength to Weight: Bending, points | 23 | |
| 14 to 24 |
| Thermal Diffusivity, mm2/s | 3.4 | |
| 11 |
| Thermal Shock Resistance, points | 19 | |
| 9.9 to 21 |
Alloy Composition
| Carbon (C), % | 0.080 to 0.16 | |
| 2.2 to 2.9 |
| Chromium (Cr), % | 20 to 22.5 | |
| 0 |
| Cobalt (Co), % | 18.5 to 21 | |
| 0 |
| Iron (Fe), % | 24.3 to 37.1 | |
| 93.6 to 96.7 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0.15 to 1.3 |
| Molybdenum (Mo), % | 2.5 to 3.5 | |
| 0 |
| Nickel (Ni), % | 19 to 21 | |
| 0 |
| Niobium (Nb), % | 0.75 to 1.3 | |
| 0 |
| Nitrogen (N), % | 0.1 to 0.2 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0.020 to 0.15 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.9 to 1.9 |
| Sulfur (S), % | 0 to 0.015 | |
| 0.020 to 0.2 |
| Tungsten (W), % | 2.0 to 3.0 | |
| 0 |