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2011A Aluminum vs. 7129 Aluminum

Both 2011A aluminum and 7129 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 2011A aluminum and the bottom bar is 7129 Aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
69
Elongation at Break, % 6.8 to 16
9.0 to 9.1
Fatigue Strength, MPa 75 to 100
150 to 190
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 190 to 250
250 to 260
Tensile Strength: Ultimate (UTS), MPa 310 to 410
430
Tensile Strength: Yield (Proof), MPa 140 to 310
380 to 390

Thermal Properties

Latent Heat of Fusion, J/g 390
380
Maximum Temperature: Mechanical, °C 190
180
Melting Completion (Liquidus), °C 660
630
Melting Onset (Solidus), °C 550
510
Specific Heat Capacity, J/kg-K 870
880
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
40
Electrical Conductivity: Equal Weight (Specific), % IACS 96
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 20 to 40
37 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 670
1050 to 1090
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 44
47
Strength to Weight: Axial, points 28 to 37
41
Strength to Weight: Bending, points 33 to 40
43 to 44
Thermal Diffusivity, mm2/s 49
58
Thermal Shock Resistance, points 14 to 18
19

Alloy Composition

Aluminum (Al), % 91.5 to 95.1
91 to 94
Bismuth (Bi), % 0.2 to 0.6
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 4.5 to 6.0
0.5 to 0.9
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 0.5
0 to 0.3
Lead (Pb), % 0.2 to 0.6
0
Magnesium (Mg), % 0
1.3 to 2.0
Manganese (Mn), % 0
0 to 0.1
Silicon (Si), % 0 to 0.4
0 to 0.15
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.3
4.2 to 5.2
Residuals, % 0
0 to 0.15

Comparable Variants