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8079 Aluminum vs. SAE-AISI S1 Steel

8079 aluminum belongs to the aluminum alloys classification, while SAE-AISI S1 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (7, 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 8079 aluminum and the bottom bar is SAE-AISI S1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 150
690 to 1840

Thermal Properties

Latent Heat of Fusion, J/g 400
260
Melting Completion (Liquidus), °C 650
1500
Melting Onset (Solidus), °C 640
1450
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 230
41
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 58
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 190
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
8.0
Density, g/cm3 2.8
8.0
Embodied Carbon, kg CO2/kg material 8.2
2.6
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 1180
56

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 15
24 to 64
Strength to Weight: Bending, points 22
22 to 42
Thermal Diffusivity, mm2/s 92
11
Thermal Shock Resistance, points 6.4
21 to 56

Alloy Composition

Aluminum (Al), % 98.1 to 99.3
0
Carbon (C), % 0
0.4 to 0.55
Chromium (Cr), % 0
1.0 to 1.8
Copper (Cu), % 0 to 0.050
0 to 0.25
Iron (Fe), % 0.7 to 1.3
91.6 to 96.7
Manganese (Mn), % 0
0.1 to 0.4
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.050 to 0.3
0.15 to 1.2
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
1.5 to 3.0
Vanadium (V), % 0
0.15 to 0.3
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0