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5070 Aluminum vs. 7129 Aluminum

Both 5070 aluminum and 7129 Aluminum are aluminum alloys. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is 5070 aluminum and the bottom bar is 7129 Aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 20
9.0 to 9.1
Fatigue Strength, MPa 150
150 to 190
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 190
250 to 260
Tensile Strength: Ultimate (UTS), MPa 300
430
Tensile Strength: Yield (Proof), MPa 140
380 to 390

Thermal Properties

Latent Heat of Fusion, J/g 390
380
Maximum Temperature: Mechanical, °C 190
180
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 550
510
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
40
Electrical Conductivity: Equal Weight (Specific), % IACS 100
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 8.8
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1170
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
37 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 150
1050 to 1090
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 31
41
Strength to Weight: Bending, points 37
43 to 44
Thermal Diffusivity, mm2/s 53
58
Thermal Shock Resistance, points 14
19

Alloy Composition

Aluminum (Al), % 92.4 to 95.7
91 to 94
Chromium (Cr), % 0 to 0.3
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 0.4
0 to 0.3
Magnesium (Mg), % 3.5 to 4.5
1.3 to 2.0
Manganese (Mn), % 0.4 to 0.8
0 to 0.1
Silicon (Si), % 0 to 0.25
0 to 0.15
Titanium (Ti), % 0 to 0.15
0 to 0.050
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0.4 to 0.8
4.2 to 5.2
Residuals, % 0 to 0.15
0 to 0.15