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7129 Aluminum vs. 2017 Aluminum

Both 7129 Aluminum and 2017 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 7129 Aluminum and the bottom bar is 2017 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
71
Elongation at Break, % 9.0 to 9.1
12 to 18
Fatigue Strength, MPa 150 to 190
90 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 250 to 260
130 to 260
Tensile Strength: Ultimate (UTS), MPa 430
190 to 430
Tensile Strength: Yield (Proof), MPa 380 to 390
76 to 260

Thermal Properties

Latent Heat of Fusion, J/g 380
390
Maximum Temperature: Mechanical, °C 180
190
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 510
510
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 40
38
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.9
3.0
Embodied Carbon, kg CO2/kg material 8.3
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 38
24 to 66
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1090
41 to 470
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
46
Strength to Weight: Axial, points 41
17 to 40
Strength to Weight: Bending, points 43 to 44
24 to 42
Thermal Diffusivity, mm2/s 58
56
Thermal Shock Resistance, points 19
7.9 to 18

Alloy Composition

Aluminum (Al), % 91 to 94
91.6 to 95.5
Chromium (Cr), % 0 to 0.1
0 to 0.1
Copper (Cu), % 0.5 to 0.9
3.5 to 4.5
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0 to 0.7
Magnesium (Mg), % 1.3 to 2.0
0.4 to 0.8
Manganese (Mn), % 0 to 0.1
0.4 to 1.0
Silicon (Si), % 0 to 0.15
0.2 to 0.8
Titanium (Ti), % 0 to 0.050
0 to 0.15
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 4.2 to 5.2
0 to 0.25
Residuals, % 0
0 to 0.15