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6063A Aluminum vs. ZK51A Magnesium

6063A aluminum belongs to the aluminum alloys classification, while ZK51A magnesium belongs to the magnesium alloys. 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 6063A aluminum and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
45
Elongation at Break, % 6.7 to 18
4.7
Fatigue Strength, MPa 53 to 80
62
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 78 to 150
160
Tensile Strength: Ultimate (UTS), MPa 130 to 260
240
Tensile Strength: Yield (Proof), MPa 55 to 200
150

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 160
120
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 620
550
Specific Heat Capacity, J/kg-K 900
970
Thermal Conductivity, W/m-K 200
110
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49 to 54
28
Electrical Conductivity: Equal Weight (Specific), % IACS 160 to 180
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
1.8
Embodied Carbon, kg CO2/kg material 8.3
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1190
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 21
10
Resilience: Unit (Modulus of Resilience), kJ/m3 22 to 280
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
64
Strength to Weight: Axial, points 13 to 26
36
Strength to Weight: Bending, points 21 to 33
47
Thermal Diffusivity, mm2/s 83
61
Thermal Shock Resistance, points 5.6 to 11
15

Alloy Composition

Aluminum (Al), % 97.5 to 99
0
Chromium (Cr), % 0 to 0.050
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0.15 to 0.35
0
Magnesium (Mg), % 0.6 to 0.9
93.1 to 95.9
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0.3 to 0.6
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.15
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3