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518.0 Aluminum vs. ZK51A Magnesium

518.0 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 518.0 aluminum and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
45
Elongation at Break, % 5.0
4.7
Fatigue Strength, MPa 140
62
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
18
Shear Strength, MPa 200
160
Tensile Strength: Ultimate (UTS), MPa 310
240
Tensile Strength: Yield (Proof), MPa 190
150

Thermal Properties

Latent Heat of Fusion, J/g 390
340
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 620
640
Melting Onset (Solidus), °C 560
550
Specific Heat Capacity, J/kg-K 900
970
Thermal Conductivity, W/m-K 98
110
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
28
Electrical Conductivity: Equal Weight (Specific), % IACS 81
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
1.8
Embodied Carbon, kg CO2/kg material 9.4
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1160
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14
10
Resilience: Unit (Modulus of Resilience), kJ/m3 270
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
64
Strength to Weight: Axial, points 32
36
Strength to Weight: Bending, points 38
47
Thermal Diffusivity, mm2/s 40
61
Thermal Shock Resistance, points 14
15

Alloy Composition

Aluminum (Al), % 88.1 to 92.5
0
Copper (Cu), % 0 to 0.25
0 to 0.1
Iron (Fe), % 0 to 1.8
0
Magnesium (Mg), % 7.5 to 8.5
93.1 to 95.9
Manganese (Mn), % 0 to 0.35
0
Nickel (Ni), % 0 to 0.15
0 to 0.010
Silicon (Si), % 0 to 0.35
0
Tin (Sn), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.15
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3