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7129 Aluminum vs. 7049 Aluminum

Both 7129 Aluminum and 7049 aluminum are aluminum alloys. They have a very high 95% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 7129 Aluminum and the bottom bar is 7049 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 9.0 to 9.1
6.2 to 7.0
Fatigue Strength, MPa 150 to 190
160 to 170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
27
Shear Strength, MPa 250 to 260
300 to 310
Tensile Strength: Ultimate (UTS), MPa 430
510 to 530
Tensile Strength: Yield (Proof), MPa 380 to 390
420 to 450

Thermal Properties

Latent Heat of Fusion, J/g 380
370
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 510
480
Specific Heat Capacity, J/kg-K 880
860
Thermal Conductivity, W/m-K 150
130
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
36
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.9
3.1
Embodied Carbon, kg CO2/kg material 8.3
8.1
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1150
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 38
31 to 34
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1090
1270 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
45
Strength to Weight: Axial, points 41
46 to 47
Strength to Weight: Bending, points 43 to 44
46 to 47
Thermal Diffusivity, mm2/s 58
51
Thermal Shock Resistance, points 19
22 to 23

Alloy Composition

Aluminum (Al), % 91 to 94
85.7 to 89.5
Chromium (Cr), % 0 to 0.1
0.1 to 0.22
Copper (Cu), % 0.5 to 0.9
1.2 to 1.9
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0 to 0.35
Magnesium (Mg), % 1.3 to 2.0
2.0 to 2.9
Manganese (Mn), % 0 to 0.1
0 to 0.2
Silicon (Si), % 0 to 0.15
0 to 0.25
Titanium (Ti), % 0 to 0.050
0 to 0.1
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 4.2 to 5.2
7.2 to 8.2
Residuals, % 0
0 to 0.15