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A444.0 Aluminum vs. ZK51A Magnesium

A444.0 aluminum belongs to the aluminum alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 29 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 A444.0 aluminum and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
45
Elongation at Break, % 18
4.7
Fatigue Strength, MPa 37
62
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Tensile Strength: Ultimate (UTS), MPa 160
240
Tensile Strength: Yield (Proof), MPa 66
150

Thermal Properties

Latent Heat of Fusion, J/g 500
340
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 590
550
Specific Heat Capacity, J/kg-K 900
970
Thermal Conductivity, W/m-K 160
110
Thermal Expansion, µm/m-K 22
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
28
Electrical Conductivity: Equal Weight (Specific), % IACS 140
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.6
1.8
Embodied Carbon, kg CO2/kg material 7.9
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1110
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24
10
Resilience: Unit (Modulus of Resilience), kJ/m3 31
260
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
64
Strength to Weight: Axial, points 17
36
Strength to Weight: Bending, points 25
47
Thermal Diffusivity, mm2/s 68
61
Thermal Shock Resistance, points 7.3
15

Alloy Composition

Aluminum (Al), % 91.6 to 93.5
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.2
0
Magnesium (Mg), % 0 to 0.050
93.1 to 95.9
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 6.5 to 7.5
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3