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ZK40A Magnesium vs. 390.0 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while 390.0 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 390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
75
Elongation at Break, % 4.2
1.0
Fatigue Strength, MPa 190
76 to 110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
28
Tensile Strength: Ultimate (UTS), MPa 280
280 to 300
Tensile Strength: Yield (Proof), MPa 260
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 340
640
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
880
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
24 to 25
Electrical Conductivity: Equal Weight (Specific), % IACS 130
79 to 83

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 1.8
2.7
Embodied Carbon, kg CO2/kg material 24
7.3
Embodied Energy, MJ/kg 160
130
Embodied Water, L/kg 950
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
2.7 to 2.9
Resilience: Unit (Modulus of Resilience), kJ/m3 740
380 to 470
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 65
52
Strength to Weight: Axial, points 43
28 to 30
Strength to Weight: Bending, points 53
35 to 36
Thermal Diffusivity, mm2/s 62
56
Thermal Shock Resistance, points 17
14 to 15

Alloy Composition


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Aluminum (Al), % 0
74.5 to 79.6
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 0
0 to 1.3
Magnesium (Mg), % 94.2 to 96.1
0.45 to 0.65
Manganese (Mn), % 0
0 to 0.1
Silicon (Si), % 0
16 to 18
Titanium (Ti), % 0
0 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 0.2