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ZK40A Magnesium vs. 6066 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while 6066 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is ZK40A magnesium and the bottom bar is 6066 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 4.2
7.8 to 17
Fatigue Strength, MPa 190
94 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 160
95 to 240
Tensile Strength: Ultimate (UTS), MPa 280
160 to 400
Tensile Strength: Yield (Proof), MPa 260
93 to 360

Thermal Properties

Latent Heat of Fusion, J/g 340
410
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 540
560
Specific Heat Capacity, J/kg-K 970
890
Thermal Conductivity, W/m-K 110
150
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
40
Electrical Conductivity: Equal Weight (Specific), % IACS 130
130

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 1.8
2.8
Embodied Carbon, kg CO2/kg material 24
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
23 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 740
61 to 920
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 65
49
Strength to Weight: Axial, points 43
16 to 39
Strength to Weight: Bending, points 53
23 to 43
Thermal Diffusivity, mm2/s 62
61
Thermal Shock Resistance, points 17
6.9 to 17

Alloy Composition

Aluminum (Al), % 0
93 to 97
Chromium (Cr), % 0
0 to 0.4
Copper (Cu), % 0
0.7 to 1.2
Iron (Fe), % 0
0 to 0.5
Magnesium (Mg), % 94.2 to 96.1
0.8 to 1.4
Manganese (Mn), % 0
0.6 to 1.1
Silicon (Si), % 0
0.9 to 1.8
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 3.5 to 4.5
0 to 0.25
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0
0 to 0.15