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5252 Aluminum vs. ZK51A Magnesium

5252 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 5252 aluminum and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
45
Elongation at Break, % 4.5 to 11
4.7
Fatigue Strength, MPa 100 to 110
62
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
18
Shear Strength, MPa 140 to 160
160
Tensile Strength: Ultimate (UTS), MPa 230 to 290
240
Tensile Strength: Yield (Proof), MPa 170 to 240
150

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 180
120
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 610
550
Specific Heat Capacity, J/kg-K 910
970
Thermal Conductivity, W/m-K 140
110
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
28
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
1.8
Embodied Carbon, kg CO2/kg material 8.7
24
Embodied Energy, MJ/kg 160
160
Embodied Water, L/kg 1190
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 23
10
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 430
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
64
Strength to Weight: Axial, points 23 to 30
36
Strength to Weight: Bending, points 31 to 36
47
Thermal Diffusivity, mm2/s 57
61
Thermal Shock Resistance, points 10 to 13
15

Alloy Composition

Aluminum (Al), % 96.6 to 97.8
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.1
0
Magnesium (Mg), % 2.2 to 2.8
93.1 to 95.9
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.080
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3