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ZK40A Magnesium vs. 2011A Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while 2011A aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is ZK40A magnesium and the bottom bar is 2011A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 4.2
6.8 to 16
Fatigue Strength, MPa 190
75 to 100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 160
190 to 250
Tensile Strength: Ultimate (UTS), MPa 280
310 to 410
Tensile Strength: Yield (Proof), MPa 260
140 to 310

Thermal Properties

Latent Heat of Fusion, J/g 340
390
Maximum Temperature: Mechanical, °C 120
190
Melting Completion (Liquidus), °C 600
660
Melting Onset (Solidus), °C 540
550
Specific Heat Capacity, J/kg-K 970
870
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
33
Electrical Conductivity: Equal Weight (Specific), % IACS 130
96

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 1.8
3.1
Embodied Carbon, kg CO2/kg material 24
7.9
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
20 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 740
140 to 670
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 65
44
Strength to Weight: Axial, points 43
28 to 37
Strength to Weight: Bending, points 53
33 to 40
Thermal Diffusivity, mm2/s 62
49
Thermal Shock Resistance, points 17
14 to 18

Alloy Composition


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Aluminum (Al), % 0
91.5 to 95.1
Bismuth (Bi), % 0
0.2 to 0.6
Copper (Cu), % 0
4.5 to 6.0
Iron (Fe), % 0
0 to 0.5
Lead (Pb), % 0
0.2 to 0.6
Magnesium (Mg), % 94.2 to 96.1
0
Silicon (Si), % 0
0 to 0.4
Zinc (Zn), % 3.5 to 4.5
0 to 0.3
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.15