Automotive Malleable Cast Iron vs. S21800 Stainless Steel
Both automotive malleable cast iron and S21800 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is automotive malleable cast iron and the bottom bar is S21800 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 130 to 290 | |
210 |
Elastic (Young's, Tensile) Modulus, GPa | 180 | |
190 |
Elongation at Break, % | 1.0 to 10 | |
40 |
Poisson's Ratio | 0.29 | |
0.28 |
Shear Modulus, GPa | 70 | |
75 |
Tensile Strength: Ultimate (UTS), MPa | 350 to 720 | |
740 |
Tensile Strength: Yield (Proof), MPa | 220 to 590 | |
390 |
Thermal Properties
Latent Heat of Fusion, J/g | 260 | |
340 |
Melting Completion (Liquidus), °C | 1410 | |
1360 |
Melting Onset (Solidus), °C | 1370 | |
1310 |
Specific Heat Capacity, J/kg-K | 480 | |
500 |
Thermal Expansion, µm/m-K | 14 | |
16 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 1.9 | |
15 |
Density, g/cm3 | 7.6 | |
7.5 |
Embodied Carbon, kg CO2/kg material | 1.5 | |
3.1 |
Embodied Energy, MJ/kg | 20 | |
45 |
Embodied Water, L/kg | 45 | |
150 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 6.8 to 30 | |
250 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 to 950 | |
390 |
Stiffness to Weight: Axial, points | 13 | |
14 |
Stiffness to Weight: Bending, points | 25 | |
26 |
Strength to Weight: Axial, points | 13 to 26 | |
27 |
Strength to Weight: Bending, points | 14 to 24 | |
24 |
Thermal Shock Resistance, points | 9.9 to 21 | |
17 |
Alloy Composition
Carbon (C), % | 2.2 to 2.9 | |
0 to 0.1 |
Chromium (Cr), % | 0 | |
16 to 18 |
Iron (Fe), % | 93.6 to 96.7 | |
59.1 to 65.4 |
Manganese (Mn), % | 0.15 to 1.3 | |
7.0 to 9.0 |
Nickel (Ni), % | 0 | |
8.0 to 9.0 |
Nitrogen (N), % | 0 | |
0.080 to 0.18 |
Phosphorus (P), % | 0.020 to 0.15 | |
0 to 0.060 |
Silicon (Si), % | 0.9 to 1.9 | |
3.5 to 4.5 |
Sulfur (S), % | 0.020 to 0.2 | |
0 to 0.030 |