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3004 Aluminum vs. Grey Cast Iron

3004 aluminum belongs to the aluminum alloys classification, while grey cast iron belongs to the iron alloys. There are 30 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 3004 aluminum and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 83
160 to 300
Elastic (Young's, Tensile) Modulus, GPa 70
180
Elongation at Break, % 1.1 to 19
9.6
Fatigue Strength, MPa 55 to 120
69 to 170
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
69
Shear Strength, MPa 100 to 180
180 to 610
Tensile Strength: Ultimate (UTS), MPa 170 to 310
160 to 450
Tensile Strength: Yield (Proof), MPa 68 to 270
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Melting Completion (Liquidus), °C 650
1380
Melting Onset (Solidus), °C 630
1180
Specific Heat Capacity, J/kg-K 900
490
Thermal Conductivity, W/m-K 160
46
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.9
Density, g/cm3 2.8
7.5
Embodied Carbon, kg CO2/kg material 8.3
1.5
Embodied Energy, MJ/kg 150
21
Embodied Water, L/kg 1180
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.2 to 27
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 540
27 to 240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 18 to 31
5.8 to 17
Strength to Weight: Bending, points 25 to 37
8.7 to 17
Thermal Diffusivity, mm2/s 65
13
Thermal Shock Resistance, points 7.6 to 13
6.0 to 17

Alloy Composition

Aluminum (Al), % 95.6 to 98.2
0
Carbon (C), % 0
3.1 to 3.4
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.7
92.1 to 93.9
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 1.0 to 1.5
0.5 to 0.7
Phosphorus (P), % 0
0 to 0.9
Silicon (Si), % 0 to 0.3
2.5 to 2.8
Sulfur (S), % 0
0 to 0.15
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0