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8176 Aluminum vs. Automotive Malleable Cast Iron

8176 aluminum belongs to the aluminum alloys classification, while automotive malleable cast iron belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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 8176 aluminum and the bottom bar is automotive malleable cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
180
Elongation at Break, % 15
1.0 to 10
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
70
Tensile Strength: Ultimate (UTS), MPa 160
350 to 720
Tensile Strength: Yield (Proof), MPa 95
220 to 590

Thermal Properties

Latent Heat of Fusion, J/g 400
260
Melting Completion (Liquidus), °C 660
1410
Melting Onset (Solidus), °C 650
1370
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 230
41
Thermal Expansion, µm/m-K 24
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 61
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 200
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.9
Density, g/cm3 2.7
7.6
Embodied Carbon, kg CO2/kg material 8.2
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1190
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
6.8 to 30
Resilience: Unit (Modulus of Resilience), kJ/m3 66
130 to 950
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 16
13 to 26
Strength to Weight: Bending, points 24
14 to 24
Thermal Diffusivity, mm2/s 93
11
Thermal Shock Resistance, points 7.0
9.9 to 21

Alloy Composition

Aluminum (Al), % 98.6 to 99.6
0
Carbon (C), % 0
2.2 to 2.9
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0.4 to 1.0
93.6 to 96.7
Manganese (Mn), % 0
0.15 to 1.3
Phosphorus (P), % 0
0.020 to 0.15
Silicon (Si), % 0.030 to 0.15
0.9 to 1.9
Sulfur (S), % 0
0.020 to 0.2
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0