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4104 Aluminum vs. 8079 Aluminum

Both 4104 aluminum and 8079 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 4104 aluminum and the bottom bar is 8079 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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