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Ductile Cast Iron vs. 3104 Aluminum

Ductile cast iron belongs to the iron alloys classification, while 3104 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 3104 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170 to 180
70
Elongation at Break, % 2.1 to 20
1.1 to 20
Poisson's Ratio 0.28 to 0.31
0.33
Shear Modulus, GPa 64 to 70
26
Shear Strength, MPa 420 to 800
110 to 180
Tensile Strength: Ultimate (UTS), MPa 460 to 920
170 to 310
Tensile Strength: Yield (Proof), MPa 310 to 670
68 to 270

Thermal Properties

Latent Heat of Fusion, J/g 270
400
Maximum Temperature: Mechanical, °C 290
180
Melting Completion (Liquidus), °C 1160
650
Melting Onset (Solidus), °C 1120
600
Specific Heat Capacity, J/kg-K 490
900
Thermal Conductivity, W/m-K 31 to 36
160
Thermal Expansion, µm/m-K 11
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
41
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.4
130

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
9.5
Density, g/cm3 7.1 to 7.5
2.8
Embodied Carbon, kg CO2/kg material 1.5
8.4
Embodied Energy, MJ/kg 21
150
Embodied Water, L/kg 43
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
1.6 to 60
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
34 to 540
Stiffness to Weight: Axial, points 12 to 14
14
Stiffness to Weight: Bending, points 24 to 26
50
Strength to Weight: Axial, points 17 to 35
17 to 31
Strength to Weight: Bending, points 18 to 29
25 to 37
Thermal Diffusivity, mm2/s 8.9 to 10
64
Thermal Shock Resistance, points 17 to 35
7.6 to 13

Alloy Composition

Aluminum (Al), % 0
95.1 to 98.4
Carbon (C), % 3.0 to 3.5
0
Copper (Cu), % 0
0.050 to 0.25
Gallium (Ga), % 0
0 to 0.050
Iron (Fe), % 93.7 to 95.5
0 to 0.8
Magnesium (Mg), % 0
0.8 to 1.3
Manganese (Mn), % 0
0.8 to 1.4
Phosphorus (P), % 0 to 0.080
0
Silicon (Si), % 1.5 to 2.8
0 to 0.6
Titanium (Ti), % 0
0 to 0.1
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants