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7129 Aluminum vs. ZE63A Magnesium

7129 Aluminum belongs to the aluminum alloys classification, while ZE63A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is 7129 Aluminum and the bottom bar is ZE63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
46
Elongation at Break, % 9.0 to 9.1
7.7
Fatigue Strength, MPa 150 to 190
120
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 250 to 260
170
Tensile Strength: Ultimate (UTS), MPa 430
300
Tensile Strength: Yield (Proof), MPa 380 to 390
190

Thermal Properties

Latent Heat of Fusion, J/g 380
330
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 630
510
Melting Onset (Solidus), °C 510
390
Specific Heat Capacity, J/kg-K 880
950
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
31
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
22
Density, g/cm3 2.9
2.0
Embodied Carbon, kg CO2/kg material 8.3
24
Embodied Energy, MJ/kg 150
180
Embodied Water, L/kg 1150
920

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 38
20
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1090
400
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 47
58
Strength to Weight: Axial, points 41
40
Strength to Weight: Bending, points 43 to 44
48
Thermal Diffusivity, mm2/s 58
57
Thermal Shock Resistance, points 19
17

Alloy Composition

Aluminum (Al), % 91 to 94
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0.5 to 0.9
0 to 0.1
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0
Magnesium (Mg), % 1.3 to 2.0
89.6 to 92
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.050
0
Unspecified Rare Earths, % 0
2.1 to 3.0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 4.2 to 5.2
5.5 to 6.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3