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ZK40A Magnesium vs. A242.0 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while A242.0 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ZK40A magnesium and the bottom bar is A242.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
73
Elongation at Break, % 4.2
1.6
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
27
Tensile Strength: Ultimate (UTS), MPa 280
220

Thermal Properties

Latent Heat of Fusion, J/g 340
390
Maximum Temperature: Mechanical, °C 120
210
Melting Completion (Liquidus), °C 600
680
Melting Onset (Solidus), °C 540
550
Specific Heat Capacity, J/kg-K 970
870
Thermal Conductivity, W/m-K 110
140
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
37
Electrical Conductivity: Equal Weight (Specific), % IACS 130
110

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 1.8
3.1
Embodied Carbon, kg CO2/kg material 24
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1130

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 65
45
Strength to Weight: Axial, points 43
20
Strength to Weight: Bending, points 53
26
Thermal Diffusivity, mm2/s 62
52
Thermal Shock Resistance, points 17
9.3

Alloy Composition


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Aluminum (Al), % 0
89.3 to 93.1
Chromium (Cr), % 0
0.15 to 0.25
Copper (Cu), % 0
3.7 to 4.5
Iron (Fe), % 0
0 to 0.8
Magnesium (Mg), % 94.2 to 96.1
1.2 to 1.7
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0
1.8 to 2.3
Silicon (Si), % 0
0 to 0.6
Titanium (Ti), % 0
0.070 to 0.2
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 0.15