Ductile Cast Iron vs. EN 1.4901 Stainless Steel
Both ductile cast iron and EN 1.4901 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is ductile cast iron and the bottom bar is EN 1.4901 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 170 to 180 | |
190 |
Elongation at Break, % | 2.1 to 20 | |
19 |
Poisson's Ratio | 0.28 to 0.31 | |
0.28 |
Shear Modulus, GPa | 64 to 70 | |
76 |
Shear Strength, MPa | 420 to 800 | |
460 |
Tensile Strength: Ultimate (UTS), MPa | 460 to 920 | |
740 |
Tensile Strength: Yield (Proof), MPa | 310 to 670 | |
490 |
Thermal Properties
Latent Heat of Fusion, J/g | 270 | |
260 |
Maximum Temperature: Mechanical, °C | 290 | |
650 |
Melting Completion (Liquidus), °C | 1160 | |
1490 |
Melting Onset (Solidus), °C | 1120 | |
1450 |
Specific Heat Capacity, J/kg-K | 490 | |
470 |
Thermal Conductivity, W/m-K | 31 to 36 | |
26 |
Thermal Expansion, µm/m-K | 11 | |
12 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
8.2 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 to 9.4 | |
9.3 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 1.9 | |
11 |
Density, g/cm3 | 7.1 to 7.5 | |
7.9 |
Embodied Carbon, kg CO2/kg material | 1.5 | |
2.8 |
Embodied Energy, MJ/kg | 21 | |
40 |
Embodied Water, L/kg | 43 | |
89 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 17 to 80 | |
120 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 to 1330 | |
620 |
Stiffness to Weight: Axial, points | 12 to 14 | |
14 |
Stiffness to Weight: Bending, points | 24 to 26 | |
24 |
Strength to Weight: Axial, points | 17 to 35 | |
26 |
Strength to Weight: Bending, points | 18 to 29 | |
23 |
Thermal Diffusivity, mm2/s | 8.9 to 10 | |
6.9 |
Thermal Shock Resistance, points | 17 to 35 | |
23 |
Alloy Composition
Aluminum (Al), % | 0 | |
0 to 0.020 |
Boron (B), % | 0 | |
0.0010 to 0.0060 |
Carbon (C), % | 3.0 to 3.5 | |
0.070 to 0.13 |
Chromium (Cr), % | 0 | |
8.5 to 9.5 |
Iron (Fe), % | 93.7 to 95.5 | |
85.8 to 89.1 |
Manganese (Mn), % | 0 | |
0.3 to 0.6 |
Molybdenum (Mo), % | 0 | |
0.3 to 0.6 |
Nickel (Ni), % | 0 | |
0 to 0.4 |
Niobium (Nb), % | 0 | |
0.040 to 0.090 |
Nitrogen (N), % | 0 | |
0.030 to 0.070 |
Phosphorus (P), % | 0 to 0.080 | |
0 to 0.020 |
Silicon (Si), % | 1.5 to 2.8 | |
0 to 0.5 |
Sulfur (S), % | 0 | |
0 to 0.010 |
Titanium (Ti), % | 0 | |
0 to 0.010 |
Tungsten (W), % | 0 | |
1.5 to 2.0 |
Vanadium (V), % | 0 | |
0.15 to 0.25 |
Zirconium (Zr), % | 0 | |
0 to 0.010 |