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5059 Aluminum vs. ZK51A Magnesium

5059 aluminum belongs to the aluminum alloys classification, while ZK51A magnesium belongs to the magnesium 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 5059 aluminum and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
45
Elongation at Break, % 11 to 25
4.7
Fatigue Strength, MPa 170 to 240
62
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 220 to 250
160
Tensile Strength: Ultimate (UTS), MPa 350 to 410
240
Tensile Strength: Yield (Proof), MPa 170 to 300
150

Thermal Properties

Latent Heat of Fusion, J/g 390
340
Maximum Temperature: Mechanical, °C 210
120
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 510
550
Specific Heat Capacity, J/kg-K 900
970
Thermal Conductivity, W/m-K 110
110
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
28
Electrical Conductivity: Equal Weight (Specific), % IACS 95
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
1.8
Embodied Carbon, kg CO2/kg material 9.1
24
Embodied Energy, MJ/kg 160
160
Embodied Water, L/kg 1160
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 42 to 75
10
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 650
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
64
Strength to Weight: Axial, points 36 to 42
36
Strength to Weight: Bending, points 41 to 45
47
Thermal Diffusivity, mm2/s 44
61
Thermal Shock Resistance, points 16 to 18
15

Alloy Composition

Aluminum (Al), % 89.9 to 94
0
Chromium (Cr), % 0 to 0.25
0
Copper (Cu), % 0 to 0.25
0 to 0.1
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 5.0 to 6.0
93.1 to 95.9
Manganese (Mn), % 0.6 to 1.2
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.45
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0.4 to 0.9
3.6 to 5.5
Zirconium (Zr), % 0.050 to 0.25
0.5 to 1.0
Residuals, % 0
0 to 0.3