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Ductile Cast Iron vs. EN AC-42200 Aluminum

Ductile cast iron belongs to the iron alloys classification, while EN AC-42200 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ductile cast iron and the bottom bar is EN AC-42200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 310
89 to 100
Elastic (Young's, Tensile) Modulus, GPa 170 to 180
70
Elongation at Break, % 2.1 to 20
3.0 to 6.7
Poisson's Ratio 0.28 to 0.31
0.33
Shear Modulus, GPa 64 to 70
26
Tensile Strength: Ultimate (UTS), MPa 460 to 920
320
Tensile Strength: Yield (Proof), MPa 310 to 670
240 to 260

Thermal Properties

Latent Heat of Fusion, J/g 270
500
Maximum Temperature: Mechanical, °C 290
170
Melting Completion (Liquidus), °C 1160
610
Melting Onset (Solidus), °C 1120
600
Specific Heat Capacity, J/kg-K 490
910
Thermal Conductivity, W/m-K 31 to 36
150
Thermal Expansion, µm/m-K 11
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
40
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.4
140

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
9.5
Density, g/cm3 7.1 to 7.5
2.6
Embodied Carbon, kg CO2/kg material 1.5
8.0
Embodied Energy, MJ/kg 21
150
Embodied Water, L/kg 43
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
9.0 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
410 to 490
Stiffness to Weight: Axial, points 12 to 14
15
Stiffness to Weight: Bending, points 24 to 26
53
Strength to Weight: Axial, points 17 to 35
34 to 35
Strength to Weight: Bending, points 18 to 29
40 to 41
Thermal Diffusivity, mm2/s 8.9 to 10
66
Thermal Shock Resistance, points 17 to 35
15

Alloy Composition

Aluminum (Al), % 0
91 to 93.1
Carbon (C), % 3.0 to 3.5
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 93.7 to 95.5
0 to 0.19
Magnesium (Mg), % 0
0.45 to 0.7
Manganese (Mn), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.080
0
Silicon (Si), % 1.5 to 2.8
6.5 to 7.5
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.1

Comparable Variants