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2011 Aluminum vs. 7108 Aluminum

Both 2011 aluminum and 7108 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is 2011 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, % 8.5 to 18
11
Fatigue Strength, MPa 74 to 120
120
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 190 to 250
210
Tensile Strength: Ultimate (UTS), MPa 310 to 420
350
Tensile Strength: Yield (Proof), MPa 140 to 310
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 540
530
Specific Heat Capacity, J/kg-K 870
880
Thermal Conductivity, W/m-K 140 to 170
150
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35 to 45
39
Electrical Conductivity: Equal Weight (Specific), % IACS 100 to 130
120

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 3.1
2.9
Embodied Carbon, kg CO2/kg material 7.9
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29 to 52
38
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 680
620
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 44
47
Strength to Weight: Axial, points 27 to 37
34
Strength to Weight: Bending, points 32 to 40
38
Thermal Diffusivity, mm2/s 51 to 64
59
Thermal Shock Resistance, points 14 to 19
16

Alloy Composition

Aluminum (Al), % 91.3 to 94.6
92.4 to 94.7
Bismuth (Bi), % 0.2 to 0.6
0
Copper (Cu), % 5.0 to 6.0
0 to 0.050
Iron (Fe), % 0 to 0.7
0 to 0.1
Lead (Pb), % 0.2 to 0.6
0
Magnesium (Mg), % 0
0.7 to 1.4
Manganese (Mn), % 0
0 to 0.050
Silicon (Si), % 0 to 0.4
0 to 0.1
Titanium (Ti), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.3
4.5 to 5.5
Zirconium (Zr), % 0
0.12 to 0.25
Residuals, % 0
0 to 0.15