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5657 Aluminum vs. 7129 Aluminum

Both 5657 aluminum and 7129 Aluminum are aluminum alloys. They have a moderately high 94% 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 5657 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, % 6.6 to 15
9.0 to 9.1
Fatigue Strength, MPa 74 to 88
150 to 190
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 92 to 110
250 to 260
Tensile Strength: Ultimate (UTS), MPa 150 to 200
430
Tensile Strength: Yield (Proof), MPa 140 to 170
380 to 390

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 660
630
Melting Onset (Solidus), °C 640
510
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 210
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 54
40
Electrical Conductivity: Equal Weight (Specific), % IACS 180
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 8.4
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 1200
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.7 to 27
37 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 200
1050 to 1090
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 15 to 20
41
Strength to Weight: Bending, points 23 to 28
43 to 44
Thermal Diffusivity, mm2/s 84
58
Thermal Shock Resistance, points 6.7 to 8.6
19

Alloy Composition

Aluminum (Al), % 98.5 to 99.4
91 to 94
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.1
0.5 to 0.9
Gallium (Ga), % 0 to 0.030
0 to 0.030
Iron (Fe), % 0 to 0.1
0 to 0.3
Magnesium (Mg), % 0.6 to 1.0
1.3 to 2.0
Manganese (Mn), % 0 to 0.030
0 to 0.1
Silicon (Si), % 0 to 0.080
0 to 0.15
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0 to 0.050
0 to 0.050
Zinc (Zn), % 0 to 0.050
4.2 to 5.2
Residuals, % 0 to 0.050
0 to 0.15