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7108A Aluminum vs. 5088 Aluminum

Both 7108A aluminum and 5088 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 7108A aluminum and the bottom bar is 5088 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
68
Elongation at Break, % 11 to 13
29
Fatigue Strength, MPa 120 to 130
180
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
25
Shear Strength, MPa 210
200
Tensile Strength: Ultimate (UTS), MPa 350
310
Tensile Strength: Yield (Proof), MPa 290 to 300
150

Thermal Properties

Latent Heat of Fusion, J/g 380
390
Maximum Temperature: Mechanical, °C 210
200
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 520
540
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
120
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
29
Electrical Conductivity: Equal Weight (Specific), % IACS 110
98

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 2.9
2.7
Embodied Carbon, kg CO2/kg material 8.3
9.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 44
76
Resilience: Unit (Modulus of Resilience), kJ/m3 610 to 640
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
50
Strength to Weight: Axial, points 33 to 34
32
Strength to Weight: Bending, points 38
38
Thermal Diffusivity, mm2/s 59
51
Thermal Shock Resistance, points 15 to 16
14

Alloy Composition


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Aluminum (Al), % 91.6 to 94.4
92.4 to 94.8
Chromium (Cr), % 0 to 0.040
0 to 0.15
Copper (Cu), % 0 to 0.050
0 to 0.25
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0.1 to 0.35
Magnesium (Mg), % 0.7 to 1.5
4.7 to 5.5
Manganese (Mn), % 0 to 0.050
0.2 to 0.5
Silicon (Si), % 0 to 0.2
0 to 0.2
Titanium (Ti), % 0 to 0.030
0
Zinc (Zn), % 4.8 to 5.8
0.2 to 0.4
Zirconium (Zr), % 0.15 to 0.25
0 to 0.15
Residuals, % 0 to 0.15
0 to 0.15