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4032 Aluminum vs. SAE-AISI S7 Steel

4032 aluminum belongs to the aluminum alloys classification, while SAE-AISI S7 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, 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 4032 aluminum and the bottom bar is SAE-AISI S7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
74
Tensile Strength: Ultimate (UTS), MPa 390
670 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 570
260
Melting Completion (Liquidus), °C 570
1460
Melting Onset (Solidus), °C 530
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 140
40
Thermal Expansion, µm/m-K 19
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 120
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 10
5.0
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 7.8
2.3
Embodied Energy, MJ/kg 140
31
Embodied Water, L/kg 1030
65

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
25
Strength to Weight: Axial, points 41
24 to 72
Strength to Weight: Bending, points 45
22 to 46
Thermal Diffusivity, mm2/s 59
11
Thermal Shock Resistance, points 20
22 to 66

Alloy Composition

Aluminum (Al), % 81.1 to 87.2
0
Carbon (C), % 0
0.45 to 0.55
Chromium (Cr), % 0 to 0.1
3.0 to 3.5
Copper (Cu), % 0.5 to 1.3
0 to 0.25
Iron (Fe), % 0 to 1.0
91.6 to 94.9
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 0
0.2 to 0.9
Molybdenum (Mo), % 0
1.3 to 1.8
Nickel (Ni), % 0.5 to 1.3
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 11 to 13.5
0.2 to 1.0
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.3
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0