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7076 Aluminum vs. 7108A Aluminum

Both 7076 aluminum and 7108A aluminum are aluminum alloys. They have a very high 96% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 7076 aluminum and the bottom bar is 7108A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
69
Elongation at Break, % 6.2
11 to 13
Fatigue Strength, MPa 170
120 to 130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 310
210
Tensile Strength: Ultimate (UTS), MPa 530
350
Tensile Strength: Yield (Proof), MPa 460
290 to 300

Thermal Properties

Latent Heat of Fusion, J/g 380
380
Maximum Temperature: Mechanical, °C 170
210
Melting Completion (Liquidus), °C 630
630
Melting Onset (Solidus), °C 460
520
Specific Heat Capacity, J/kg-K 860
870
Thermal Conductivity, W/m-K 140
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
36
Electrical Conductivity: Equal Weight (Specific), % IACS 100
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 3.0
2.9
Embodied Carbon, kg CO2/kg material 8.0
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1110
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
38 to 44
Resilience: Unit (Modulus of Resilience), kJ/m3 1510
610 to 640
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
47
Strength to Weight: Axial, points 49
33 to 34
Strength to Weight: Bending, points 48
38
Thermal Diffusivity, mm2/s 54
59
Thermal Shock Resistance, points 23
15 to 16

Alloy Composition

Aluminum (Al), % 86.9 to 91.2
91.6 to 94.4
Chromium (Cr), % 0
0 to 0.040
Copper (Cu), % 0.3 to 1.0
0 to 0.050
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 0.6
0 to 0.3
Magnesium (Mg), % 1.2 to 2.0
0.7 to 1.5
Manganese (Mn), % 0.3 to 0.8
0 to 0.050
Silicon (Si), % 0 to 0.4
0 to 0.2
Titanium (Ti), % 0 to 0.2
0 to 0.030
Zinc (Zn), % 7.0 to 8.0
4.8 to 5.8
Zirconium (Zr), % 0
0.15 to 0.25
Residuals, % 0
0 to 0.15