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7108A Aluminum vs. 7003 Aluminum

Both 7108A aluminum and 7003 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 7003 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 11 to 13
11
Fatigue Strength, MPa 120 to 130
130 to 150
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 210
210 to 230
Tensile Strength: Ultimate (UTS), MPa 350
350 to 390
Tensile Strength: Yield (Proof), MPa 290 to 300
300 to 310

Thermal Properties

Latent Heat of Fusion, J/g 380
380
Maximum Temperature: Mechanical, °C 210
200
Melting Completion (Liquidus), °C 630
630
Melting Onset (Solidus), °C 520
510
Specific Heat Capacity, J/kg-K 870
870
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

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

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
8.1
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 44
37 to 41
Resilience: Unit (Modulus of Resilience), kJ/m3 610 to 640
630 to 710
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
47
Strength to Weight: Axial, points 33 to 34
33 to 37
Strength to Weight: Bending, points 38
37 to 40
Thermal Diffusivity, mm2/s 59
59
Thermal Shock Resistance, points 15 to 16
15 to 17

Alloy Composition

Aluminum (Al), % 91.6 to 94.4
90.6 to 94.5
Chromium (Cr), % 0 to 0.040
0 to 0.2
Copper (Cu), % 0 to 0.050
0 to 0.2
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0 to 0.35
Magnesium (Mg), % 0.7 to 1.5
0.5 to 1.0
Manganese (Mn), % 0 to 0.050
0 to 0.3
Silicon (Si), % 0 to 0.2
0 to 0.3
Titanium (Ti), % 0 to 0.030
0 to 0.2
Zinc (Zn), % 4.8 to 5.8
5.0 to 6.5
Zirconium (Zr), % 0.15 to 0.25
0.050 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants