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6106 Aluminum vs. 7129 Aluminum

Both 6106 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 6106 aluminum and the bottom bar is 7129 Aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
69
Elongation at Break, % 9.1
9.0 to 9.1
Fatigue Strength, MPa 88
150 to 190
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 170
250 to 260
Tensile Strength: Ultimate (UTS), MPa 290
430
Tensile Strength: Yield (Proof), MPa 220
380 to 390

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 160
180
Melting Completion (Liquidus), °C 660
630
Melting Onset (Solidus), °C 610
510
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 190
150
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49
40
Electrical Conductivity: Equal Weight (Specific), % IACS 160
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.9
Embodied Carbon, kg CO2/kg material 8.3
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1190
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24
37 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 370
1050 to 1090
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 29
41
Strength to Weight: Bending, points 35
43 to 44
Thermal Diffusivity, mm2/s 78
58
Thermal Shock Resistance, points 13
19

Alloy Composition

Aluminum (Al), % 97.2 to 99.3
91 to 94
Chromium (Cr), % 0 to 0.2
0 to 0.1
Copper (Cu), % 0 to 0.25
0.5 to 0.9
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 0.35
0 to 0.3
Magnesium (Mg), % 0.4 to 0.8
1.3 to 2.0
Manganese (Mn), % 0.050 to 0.2
0 to 0.1
Silicon (Si), % 0.3 to 0.6
0 to 0.15
Titanium (Ti), % 0 to 0.1
0 to 0.050
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.15
4.2 to 5.2
Residuals, % 0
0 to 0.15