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7129 Aluminum vs. 6101A Aluminum

Both 7129 Aluminum and 6101A 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 7129 Aluminum and the bottom bar is 6101A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
68
Elongation at Break, % 9.0 to 9.1
11
Fatigue Strength, MPa 150 to 190
80
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 250 to 260
130
Tensile Strength: Ultimate (UTS), MPa 430
220
Tensile Strength: Yield (Proof), MPa 380 to 390
190

Thermal Properties

Latent Heat of Fusion, J/g 380
400
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 510
630
Specific Heat Capacity, J/kg-K 880
900
Thermal Conductivity, W/m-K 150
200
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
55
Electrical Conductivity: Equal Weight (Specific), % IACS 120
180

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 38
24
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1090
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
51
Strength to Weight: Axial, points 41
23
Strength to Weight: Bending, points 43 to 44
30
Thermal Diffusivity, mm2/s 58
84
Thermal Shock Resistance, points 19
10

Alloy Composition

Aluminum (Al), % 91 to 94
97.9 to 99.3
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0.5 to 0.9
0 to 0.050
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0 to 0.4
Magnesium (Mg), % 1.3 to 2.0
0.4 to 0.9
Manganese (Mn), % 0 to 0.1
0
Silicon (Si), % 0 to 0.15
0.3 to 0.7
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 4.2 to 5.2
0
Residuals, % 0
0 to 0.1