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5182 Aluminum vs. Grey Cast Iron

5182 aluminum belongs to the aluminum alloys classification, while grey cast iron belongs to the iron 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 5182 aluminum and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
180
Elongation at Break, % 1.1 to 12
9.6
Fatigue Strength, MPa 100 to 130
69 to 170
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
69
Shear Strength, MPa 170 to 240
180 to 610
Tensile Strength: Ultimate (UTS), MPa 280 to 420
160 to 450
Tensile Strength: Yield (Proof), MPa 130 to 360
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 390
280
Melting Completion (Liquidus), °C 640
1380
Melting Onset (Solidus), °C 590
1180
Specific Heat Capacity, J/kg-K 900
490
Thermal Conductivity, W/m-K 130
46
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 94
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.9
Density, g/cm3 2.7
7.5
Embodied Carbon, kg CO2/kg material 8.9
1.5
Embodied Energy, MJ/kg 150
21
Embodied Water, L/kg 1180
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 49
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 950
27 to 240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 29 to 44
5.8 to 17
Strength to Weight: Bending, points 36 to 47
8.7 to 17
Thermal Diffusivity, mm2/s 53
13
Thermal Shock Resistance, points 12 to 19
6.0 to 17

Alloy Composition

Aluminum (Al), % 93.2 to 95.8
0
Carbon (C), % 0
3.1 to 3.4
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 0.35
92.1 to 93.9
Magnesium (Mg), % 4.0 to 5.0
0
Manganese (Mn), % 0.2 to 0.5
0.5 to 0.7
Phosphorus (P), % 0
0 to 0.9
Silicon (Si), % 0 to 0.2
2.5 to 2.8
Sulfur (S), % 0
0 to 0.15
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0