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5456 Aluminum vs. ZK61A Magnesium

5456 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 5456 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, % 11 to 18
5.8 to 7.1
Fatigue Strength, MPa 130 to 210
120 to 140
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 190 to 210
170 to 180
Tensile Strength: Ultimate (UTS), MPa 320 to 340
290 to 310
Tensile Strength: Yield (Proof), MPa 150 to 250
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 390
330
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 570
530
Specific Heat Capacity, J/kg-K 900
960
Thermal Conductivity, W/m-K 120
120
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
29
Electrical Conductivity: Equal Weight (Specific), % IACS 97
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
1.9
Embodied Carbon, kg CO2/kg material 9.0
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1170
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33 to 46
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 470
370 to 420
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
62
Strength to Weight: Axial, points 33 to 35
42 to 45
Strength to Weight: Bending, points 38 to 40
50 to 53
Thermal Diffusivity, mm2/s 48
65
Thermal Shock Resistance, points 14 to 15
17 to 18

Alloy Composition

Aluminum (Al), % 92 to 94.8
0
Chromium (Cr), % 0.050 to 0.2
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 4.7 to 5.5
92.1 to 93.9
Manganese (Mn), % 0.5 to 1.0
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.25
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3