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2017 Aluminum vs. 7108 Aluminum

Both 2017 aluminum and 7108 aluminum are aluminum alloys. They have a moderately high 95% of their average alloy composition in common.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
69
Elongation at Break, % 12 to 18
11
Fatigue Strength, MPa 90 to 130
120
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

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
530
Specific Heat Capacity, J/kg-K 880
880
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
39
Electrical Conductivity: Equal Weight (Specific), % IACS 110
120

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
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
Resilience: Unit (Modulus of Resilience), kJ/m3 41 to 470
620
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
47
Strength to Weight: Axial, points 17 to 40
34
Strength to Weight: Bending, points 24 to 42
38
Thermal Diffusivity, mm2/s 56
59
Thermal Shock Resistance, points 7.9 to 18
16

Alloy Composition


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Aluminum (Al), % 91.6 to 95.5
92.4 to 94.7
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
0 to 0.050
Iron (Fe), % 0 to 0.7
0 to 0.1
Magnesium (Mg), % 0.4 to 0.8
0.7 to 1.4
Manganese (Mn), % 0.4 to 1.0
0 to 0.050
Silicon (Si), % 0.2 to 0.8
0 to 0.1
Titanium (Ti), % 0 to 0.15
0 to 0.050
Zinc (Zn), % 0 to 0.25
4.5 to 5.5
Zirconium (Zr), % 0
0.12 to 0.25
Residuals, % 0 to 0.15
0 to 0.15