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6063 Aluminum vs. Automotive Grey Cast Iron

6063 aluminum belongs to the aluminum alloys classification, while automotive grey cast iron belongs to the iron alloys. There are 28 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 6063 aluminum and the bottom bar is automotive grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 25 to 95
160 to 280
Elastic (Young's, Tensile) Modulus, GPa 68
180
Elongation at Break, % 7.3 to 21
9.6 to 14
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
69 to 70
Tensile Strength: Ultimate (UTS), MPa 110 to 300
140 to 290
Tensile Strength: Yield (Proof), MPa 49 to 270
94 to 200

Thermal Properties

Latent Heat of Fusion, J/g 400
260 to 280
Melting Completion (Liquidus), °C 650
1380 to 1390
Melting Onset (Solidus), °C 620
1340 to 1350
Specific Heat Capacity, J/kg-K 900
490
Thermal Conductivity, W/m-K 190 to 220
41 to 43
Thermal Expansion, µm/m-K 23
12 to 14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49 to 58
7.4 to 7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 160 to 190
8.8 to 9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.9 to 3.0
Density, g/cm3 2.7
7.5 to 7.6
Embodied Carbon, kg CO2/kg material 8.3
1.5 to 1.7
Embodied Energy, MJ/kg 150
21 to 24
Embodied Water, L/kg 1190
44 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 27
18 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 540
25 to 110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 11 to 31
5.2 to 11
Strength to Weight: Bending, points 18 to 37
8.0 to 13
Thermal Diffusivity, mm2/s 79 to 89
11 to 12
Thermal Shock Resistance, points 4.8 to 13
4.2 to 8.6