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ZK40A Magnesium vs. 5050 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while 5050 aluminum belongs to the aluminum alloys. There are 30 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 5050 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
68
Elongation at Break, % 4.2
1.7 to 22
Fatigue Strength, MPa 190
45 to 100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 160
91 to 140
Tensile Strength: Ultimate (UTS), MPa 280
140 to 250
Tensile Strength: Yield (Proof), MPa 260
50 to 210

Thermal Properties

Latent Heat of Fusion, J/g 340
400
Maximum Temperature: Mechanical, °C 120
180
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 540
630
Specific Heat Capacity, J/kg-K 970
900
Thermal Conductivity, W/m-K 110
190
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
50
Electrical Conductivity: Equal Weight (Specific), % IACS 130
170

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 1.8
2.7
Embodied Carbon, kg CO2/kg material 24
8.4
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
4.1 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 740
18 to 330
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 65
50
Strength to Weight: Axial, points 43
15 to 26
Strength to Weight: Bending, points 53
22 to 33
Thermal Diffusivity, mm2/s 62
79
Thermal Shock Resistance, points 17
6.3 to 11

Alloy Composition


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Aluminum (Al), % 0
96.3 to 98.9
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 0
0 to 0.7
Magnesium (Mg), % 94.2 to 96.1
1.1 to 1.8
Manganese (Mn), % 0
0 to 0.1
Silicon (Si), % 0
0 to 0.4
Zinc (Zn), % 3.5 to 4.5
0 to 0.25
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.15