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6012 Aluminum vs. 7129 Aluminum

Both 6012 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 6012 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 to 11
9.0 to 9.1
Fatigue Strength, MPa 55 to 100
150 to 190
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 130 to 190
250 to 260
Tensile Strength: Ultimate (UTS), MPa 220 to 320
430
Tensile Strength: Yield (Proof), MPa 110 to 260
380 to 390

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 170
180
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 570
510
Specific Heat Capacity, J/kg-K 890
880
Thermal Conductivity, W/m-K 160
150
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
40
Electrical Conductivity: Equal Weight (Specific), % IACS 140
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.9
2.9
Embodied Carbon, kg CO2/kg material 8.2
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1170
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 28
37 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 94 to 480
1050 to 1090
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 48
47
Strength to Weight: Axial, points 22 to 32
41
Strength to Weight: Bending, points 29 to 37
43 to 44
Thermal Diffusivity, mm2/s 62
58
Thermal Shock Resistance, points 10 to 14
19

Alloy Composition

Aluminum (Al), % 92.2 to 98
91 to 94
Bismuth (Bi), % 0 to 0.7
0
Chromium (Cr), % 0 to 0.3
0 to 0.1
Copper (Cu), % 0 to 0.1
0.5 to 0.9
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 0.5
0 to 0.3
Lead (Pb), % 0.4 to 2.0
0
Magnesium (Mg), % 0.6 to 1.2
1.3 to 2.0
Manganese (Mn), % 0.4 to 1.0
0 to 0.1
Silicon (Si), % 0.6 to 1.4
0 to 0.15
Titanium (Ti), % 0 to 0.2
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