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7129 Aluminum vs. 7003 Aluminum

Both 7129 Aluminum and 7003 aluminum are aluminum alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is 7129 Aluminum and the bottom bar is 7003 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 9.0 to 9.1
11
Fatigue Strength, MPa 150 to 190
130 to 150
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 250 to 260
210 to 230
Tensile Strength: Ultimate (UTS), MPa 430
350 to 390
Tensile Strength: Yield (Proof), MPa 380 to 390
300 to 310

Thermal Properties

Latent Heat of Fusion, J/g 380
380
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 630
630
Melting Onset (Solidus), °C 510
510
Specific Heat Capacity, J/kg-K 880
870
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 24
24

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
9.5
Density, g/cm3 2.9
2.9
Embodied Carbon, kg CO2/kg material 8.3
8.1
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 38
37 to 41
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1090
630 to 710
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
47
Strength to Weight: Axial, points 41
33 to 37
Strength to Weight: Bending, points 43 to 44
37 to 40
Thermal Diffusivity, mm2/s 58
59
Thermal Shock Resistance, points 19
15 to 17

Alloy Composition

Aluminum (Al), % 91 to 94
90.6 to 94.5
Chromium (Cr), % 0 to 0.1
0 to 0.2
Copper (Cu), % 0.5 to 0.9
0 to 0.2
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0 to 0.35
Magnesium (Mg), % 1.3 to 2.0
0.5 to 1.0
Manganese (Mn), % 0 to 0.1
0 to 0.3
Silicon (Si), % 0 to 0.15
0 to 0.3
Titanium (Ti), % 0 to 0.050
0 to 0.2
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 4.2 to 5.2
5.0 to 6.5
Zirconium (Zr), % 0
0.050 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants