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5657 Aluminum vs. ZK61A Magnesium

5657 aluminum belongs to the aluminum alloys classification, while ZK61A 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 5657 aluminum and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
46
Elongation at Break, % 6.6 to 15
5.8 to 7.1
Fatigue Strength, MPa 74 to 88
120 to 140
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 92 to 110
170 to 180
Tensile Strength: Ultimate (UTS), MPa 150 to 200
290 to 310
Tensile Strength: Yield (Proof), MPa 140 to 170
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 400
330
Maximum Temperature: Mechanical, °C 180
120
Melting Completion (Liquidus), °C 660
640
Melting Onset (Solidus), °C 640
530
Specific Heat Capacity, J/kg-K 900
960
Thermal Conductivity, W/m-K 210
120
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 54
29
Electrical Conductivity: Equal Weight (Specific), % IACS 180
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
1.9
Embodied Carbon, kg CO2/kg material 8.4
23
Embodied Energy, MJ/kg 160
160
Embodied Water, L/kg 1200
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.7 to 27
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 200
370 to 420
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
62
Strength to Weight: Axial, points 15 to 20
42 to 45
Strength to Weight: Bending, points 23 to 28
50 to 53
Thermal Diffusivity, mm2/s 84
65
Thermal Shock Resistance, points 6.7 to 8.6
17 to 18

Alloy Composition

Aluminum (Al), % 98.5 to 99.4
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.1
0
Magnesium (Mg), % 0.6 to 1.0
92.1 to 93.9
Manganese (Mn), % 0 to 0.030
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
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3