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5042 Aluminum vs. 7108A Aluminum

Both 5042 aluminum and 7108A aluminum are aluminum alloys. They have a moderately high 95% of their average alloy composition in common.

For each property being compared, the top bar is 5042 aluminum and the bottom bar is 7108A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 1.1 to 3.4
11 to 13
Fatigue Strength, MPa 97 to 120
120 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 200
210
Tensile Strength: Ultimate (UTS), MPa 340 to 360
350
Tensile Strength: Yield (Proof), MPa 270 to 310
290 to 300

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 180
210
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 570
520
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
36
Electrical Conductivity: Equal Weight (Specific), % IACS 110
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
2.9
Embodied Carbon, kg CO2/kg material 8.8
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6 to 12
38 to 44
Resilience: Unit (Modulus of Resilience), kJ/m3 550 to 720
610 to 640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 35 to 37
33 to 34
Strength to Weight: Bending, points 40 to 42
38
Thermal Diffusivity, mm2/s 53
59
Thermal Shock Resistance, points 15 to 16
15 to 16

Alloy Composition

Aluminum (Al), % 94.2 to 96.8
91.6 to 94.4
Chromium (Cr), % 0 to 0.1
0 to 0.040
Copper (Cu), % 0 to 0.15
0 to 0.050
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 0.35
0 to 0.3
Magnesium (Mg), % 3.0 to 4.0
0.7 to 1.5
Manganese (Mn), % 0.2 to 0.5
0 to 0.050
Silicon (Si), % 0 to 0.2
0 to 0.2
Titanium (Ti), % 0 to 0.1
0 to 0.030
Zinc (Zn), % 0 to 0.25
4.8 to 5.8
Zirconium (Zr), % 0
0.15 to 0.25
Residuals, % 0
0 to 0.15