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7108A Aluminum vs. 7116 Aluminum

Both 7108A aluminum and 7116 aluminum are aluminum alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is 7108A aluminum and the bottom bar is 7116 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
69
Elongation at Break, % 11 to 13
7.8
Fatigue Strength, MPa 120 to 130
160
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 210
220
Tensile Strength: Ultimate (UTS), MPa 350
370
Tensile Strength: Yield (Proof), MPa 290 to 300
330

Thermal Properties

Latent Heat of Fusion, J/g 380
380
Maximum Temperature: Mechanical, °C 210
170
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 520
520
Specific Heat Capacity, J/kg-K 870
880
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
46
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 2.9
2.9
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 44
28
Resilience: Unit (Modulus of Resilience), kJ/m3 610 to 640
790
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
47
Strength to Weight: Axial, points 33 to 34
35
Strength to Weight: Bending, points 38
39
Thermal Diffusivity, mm2/s 59
58
Thermal Shock Resistance, points 15 to 16
16

Alloy Composition

Aluminum (Al), % 91.6 to 94.4
91.5 to 94.5
Chromium (Cr), % 0 to 0.040
0
Copper (Cu), % 0 to 0.050
0.5 to 1.1
Gallium (Ga), % 0 to 0.030
0 to 0.030
Iron (Fe), % 0 to 0.3
0 to 0.3
Magnesium (Mg), % 0.7 to 1.5
0.8 to 1.4
Manganese (Mn), % 0 to 0.050
0 to 0.050
Silicon (Si), % 0 to 0.2
0 to 0.15
Titanium (Ti), % 0 to 0.030
0 to 0.050
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 4.8 to 5.8
4.2 to 5.2
Zirconium (Zr), % 0.15 to 0.25
0
Residuals, % 0
0 to 0.15