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ZK40A Magnesium vs. EN AC-45500 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while EN AC-45500 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ZK40A magnesium and the bottom bar is EN AC-45500 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 4.2
2.8
Fatigue Strength, MPa 190
80
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Tensile Strength: Ultimate (UTS), MPa 280
320
Tensile Strength: Yield (Proof), MPa 260
250

Thermal Properties

Latent Heat of Fusion, J/g 340
500
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 600
610
Melting Onset (Solidus), °C 540
600
Specific Heat Capacity, J/kg-K 970
900
Thermal Conductivity, W/m-K 110
150
Thermal Expansion, µm/m-K 26
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
33
Electrical Conductivity: Equal Weight (Specific), % IACS 130
110

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 1.8
2.6
Embodied Carbon, kg CO2/kg material 24
8.0
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
8.2
Resilience: Unit (Modulus of Resilience), kJ/m3 740
430
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 65
53
Strength to Weight: Axial, points 43
34
Strength to Weight: Bending, points 53
40
Thermal Diffusivity, mm2/s 62
65
Thermal Shock Resistance, points 17
15

Alloy Composition


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Aluminum (Al), % 0
90.6 to 93.1
Copper (Cu), % 0
0.2 to 0.7
Iron (Fe), % 0
0 to 0.25
Magnesium (Mg), % 94.2 to 96.1
0.2 to 0.45
Manganese (Mn), % 0
0 to 0.15
Silicon (Si), % 0
6.5 to 7.5
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 3.5 to 4.5
0 to 0.070
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.1