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Automotive Grey Cast Iron vs. 5010 Aluminum

Automotive grey cast iron belongs to the iron alloys classification, while 5010 aluminum belongs to the aluminum alloys. There are 28 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 automotive grey cast iron and the bottom bar is 5010 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 280
27 to 62
Elastic (Young's, Tensile) Modulus, GPa 180
69
Elongation at Break, % 9.6 to 14
1.1 to 23
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 69 to 70
26
Tensile Strength: Ultimate (UTS), MPa 140 to 290
100 to 210
Tensile Strength: Yield (Proof), MPa 94 to 200
38 to 190

Thermal Properties

Latent Heat of Fusion, J/g 260 to 280
400
Melting Completion (Liquidus), °C 1380 to 1390
650
Melting Onset (Solidus), °C 1340 to 1350
630
Specific Heat Capacity, J/kg-K 490
900
Thermal Conductivity, W/m-K 41 to 43
200
Thermal Expansion, µm/m-K 12 to 14
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4 to 7.6
45
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.1
150

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9 to 3.0
9.5
Density, g/cm3 7.5 to 7.6
2.7
Embodied Carbon, kg CO2/kg material 1.5 to 1.7
8.2
Embodied Energy, MJ/kg 21 to 24
150
Embodied Water, L/kg 44 to 51
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 25
2.3 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 25 to 110
10 to 270
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 5.2 to 11
10 to 22
Strength to Weight: Bending, points 8.0 to 13
18 to 29
Thermal Diffusivity, mm2/s 11 to 12
82
Thermal Shock Resistance, points 4.2 to 8.6
4.5 to 9.4