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7003 Aluminum vs. Grey Cast Iron

7003 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 7003 aluminum and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
180
Elongation at Break, % 11
9.6
Fatigue Strength, MPa 130 to 150
69 to 170
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
69
Shear Strength, MPa 210 to 230
180 to 610
Tensile Strength: Ultimate (UTS), MPa 350 to 390
160 to 450
Tensile Strength: Yield (Proof), MPa 300 to 310
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 380
280
Melting Completion (Liquidus), °C 630
1380
Melting Onset (Solidus), °C 510
1180
Specific Heat Capacity, J/kg-K 870
490
Thermal Conductivity, W/m-K 150
46
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.9
Density, g/cm3 2.9
7.5
Embodied Carbon, kg CO2/kg material 8.1
1.5
Embodied Energy, MJ/kg 150
21
Embodied Water, L/kg 1140
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 41
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 710
27 to 240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 33 to 37
5.8 to 17
Strength to Weight: Bending, points 37 to 40
8.7 to 17
Thermal Diffusivity, mm2/s 59
13
Thermal Shock Resistance, points 15 to 17
6.0 to 17

Alloy Composition

Aluminum (Al), % 90.6 to 94.5
0
Carbon (C), % 0
3.1 to 3.4
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.35
92.1 to 93.9
Magnesium (Mg), % 0.5 to 1.0
0
Manganese (Mn), % 0 to 0.3
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
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.0 to 6.5
0
Zirconium (Zr), % 0.050 to 0.25
0
Residuals, % 0 to 0.15
0