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ZK40A Magnesium vs. EN AC-21000 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while EN AC-21000 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-21000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
71
Elongation at Break, % 4.2
6.7
Fatigue Strength, MPa 190
100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
27
Tensile Strength: Ultimate (UTS), MPa 280
340
Tensile Strength: Yield (Proof), MPa 260
240

Thermal Properties

Latent Heat of Fusion, J/g 340
390
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 600
670
Melting Onset (Solidus), °C 540
550
Specific Heat Capacity, J/kg-K 970
880
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
34
Electrical Conductivity: Equal Weight (Specific), % IACS 130
100

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 1.8
3.0
Embodied Carbon, kg CO2/kg material 24
8.0
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
21
Resilience: Unit (Modulus of Resilience), kJ/m3 740
390
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 65
46
Strength to Weight: Axial, points 43
32
Strength to Weight: Bending, points 53
36
Thermal Diffusivity, mm2/s 62
49
Thermal Shock Resistance, points 17
15

Alloy Composition


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Aluminum (Al), % 0
93.4 to 95.5
Copper (Cu), % 0
4.2 to 5.0
Iron (Fe), % 0
0 to 0.35
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 94.2 to 96.1
0.15 to 0.35
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0
0 to 0.050
Silicon (Si), % 0
0 to 0.2
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0.15 to 0.3
Zinc (Zn), % 3.5 to 4.5
0 to 0.1
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.1