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5154 Aluminum vs. ZK51A Magnesium

5154 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 5154 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, % 3.4 to 20
4.7
Fatigue Strength, MPa 100 to 160
62
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 140 to 210
160
Tensile Strength: Ultimate (UTS), MPa 240 to 360
240
Tensile Strength: Yield (Proof), MPa 94 to 270
150

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 590
550
Specific Heat Capacity, J/kg-K 900
970
Thermal Conductivity, W/m-K 130
110
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
28
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
1.8
Embodied Carbon, kg CO2/kg material 8.8
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11 to 39
10
Resilience: Unit (Modulus of Resilience), kJ/m3 64 to 540
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
64
Strength to Weight: Axial, points 25 to 37
36
Strength to Weight: Bending, points 32 to 42
47
Thermal Diffusivity, mm2/s 52
61
Thermal Shock Resistance, points 10 to 16
15

Alloy Composition

Aluminum (Al), % 94.4 to 96.8
0
Chromium (Cr), % 0.15 to 0.35
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 3.1 to 3.9
93.1 to 95.9
Manganese (Mn), % 0 to 0.1
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 0.2
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3