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8079 Aluminum vs. 4104 Aluminum

Both 8079 aluminum and 4104 aluminum are aluminum alloys. They have 89% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 8079 aluminum and the bottom bar is 4104 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
71
Elongation at Break, % 2.2
2.4
Fatigue Strength, MPa 56
42
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Tensile Strength: Ultimate (UTS), MPa 150
110
Tensile Strength: Yield (Proof), MPa 120
60

Thermal Properties

Latent Heat of Fusion, J/g 400
540
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 640
560
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 230
130
Thermal Expansion, µm/m-K 23
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 58
33
Electrical Conductivity: Equal Weight (Specific), % IACS 190
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
9.5
Density, g/cm3 2.8
2.6
Embodied Carbon, kg CO2/kg material 8.2
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 110
25
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
54
Strength to Weight: Axial, points 15
12
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 92
58
Thermal Shock Resistance, points 6.4
5.1

Alloy Composition

Aluminum (Al), % 98.1 to 99.3
85.8 to 90
Bismuth (Bi), % 0
0.020 to 0.2
Copper (Cu), % 0 to 0.050
0 to 0.25
Iron (Fe), % 0.7 to 1.3
0 to 0.8
Magnesium (Mg), % 0
1.0 to 2.0
Manganese (Mn), % 0
0 to 0.1
Silicon (Si), % 0.050 to 0.3
9.0 to 10.5
Zinc (Zn), % 0 to 0.1
0 to 0.2
Residuals, % 0
0 to 0.15