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5070 Aluminum vs. 7108A Aluminum

Both 5070 aluminum and 7108A aluminum are aluminum alloys. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is 5070 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, % 20
11 to 13
Fatigue Strength, MPa 150
120 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 190
210
Tensile Strength: Ultimate (UTS), MPa 300
350
Tensile Strength: Yield (Proof), MPa 140
290 to 300

Thermal Properties

Latent Heat of Fusion, J/g 390
380
Maximum Temperature: Mechanical, °C 190
210
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 550
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 31
36
Electrical Conductivity: Equal Weight (Specific), % IACS 100
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 1170
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
38 to 44
Resilience: Unit (Modulus of Resilience), kJ/m3 150
610 to 640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 31
33 to 34
Strength to Weight: Bending, points 37
38
Thermal Diffusivity, mm2/s 53
59
Thermal Shock Resistance, points 14
15 to 16

Alloy Composition

Aluminum (Al), % 92.4 to 95.7
91.6 to 94.4
Chromium (Cr), % 0 to 0.3
0 to 0.040
Copper (Cu), % 0 to 0.25
0 to 0.050
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 0.4
0 to 0.3
Magnesium (Mg), % 3.5 to 4.5
0.7 to 1.5
Manganese (Mn), % 0.4 to 0.8
0 to 0.050
Silicon (Si), % 0 to 0.25
0 to 0.2
Titanium (Ti), % 0 to 0.15
0 to 0.030
Zinc (Zn), % 0.4 to 0.8
4.8 to 5.8
Zirconium (Zr), % 0
0.15 to 0.25
Residuals, % 0 to 0.15
0 to 0.15