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2017 Aluminum vs. 7108A Aluminum

Both 2017 aluminum and 7108A aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is 2017 aluminum and the bottom bar is 7108A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
69
Elongation at Break, % 12 to 18
11 to 13
Fatigue Strength, MPa 90 to 130
120 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 130 to 260
210
Tensile Strength: Ultimate (UTS), MPa 190 to 430
350
Tensile Strength: Yield (Proof), MPa 76 to 260
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 510
520
Specific Heat Capacity, J/kg-K 880
870
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
36
Electrical Conductivity: Equal Weight (Specific), % IACS 110
110

Otherwise Unclassified Properties

Base Metal Price, % relative 10
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 1140
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 66
38 to 44
Resilience: Unit (Modulus of Resilience), kJ/m3 41 to 470
610 to 640
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
47
Strength to Weight: Axial, points 17 to 40
33 to 34
Strength to Weight: Bending, points 24 to 42
38
Thermal Diffusivity, mm2/s 56
59
Thermal Shock Resistance, points 7.9 to 18
15 to 16

Alloy Composition

Aluminum (Al), % 91.6 to 95.5
91.6 to 94.4
Chromium (Cr), % 0 to 0.1
0 to 0.040
Copper (Cu), % 3.5 to 4.5
0 to 0.050
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 0.7
0 to 0.3
Magnesium (Mg), % 0.4 to 0.8
0.7 to 1.5
Manganese (Mn), % 0.4 to 1.0
0 to 0.050
Silicon (Si), % 0.2 to 0.8
0 to 0.2
Titanium (Ti), % 0 to 0.15
0 to 0.030
Zinc (Zn), % 0 to 0.25
4.8 to 5.8
Zirconium (Zr), % 0
0.15 to 0.25
Residuals, % 0
0 to 0.15