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ZK51A Magnesium vs. A242.0 Aluminum

ZK51A magnesium belongs to the magnesium alloys classification, while A242.0 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ZK51A magnesium and the bottom bar is A242.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
73
Elongation at Break, % 4.7
1.6
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
27
Tensile Strength: Ultimate (UTS), MPa 240
220

Thermal Properties

Latent Heat of Fusion, J/g 340
390
Maximum Temperature: Mechanical, °C 120
210
Melting Completion (Liquidus), °C 640
680
Melting Onset (Solidus), °C 550
550
Specific Heat Capacity, J/kg-K 970
870
Thermal Conductivity, W/m-K 110
140
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
37
Electrical Conductivity: Equal Weight (Specific), % IACS 140
110

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 1.8
3.1
Embodied Carbon, kg CO2/kg material 24
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 940
1130

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 64
45
Strength to Weight: Axial, points 36
20
Strength to Weight: Bending, points 47
26
Thermal Diffusivity, mm2/s 61
52
Thermal Shock Resistance, points 15
9.3

Alloy Composition

Aluminum (Al), % 0
89.3 to 93.1
Chromium (Cr), % 0
0.15 to 0.25
Copper (Cu), % 0 to 0.1
3.7 to 4.5
Iron (Fe), % 0
0 to 0.8
Magnesium (Mg), % 93.1 to 95.9
1.2 to 1.7
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.010
1.8 to 2.3
Silicon (Si), % 0
0 to 0.6
Titanium (Ti), % 0
0.070 to 0.2
Zinc (Zn), % 3.6 to 5.5
0 to 0.1
Zirconium (Zr), % 0.5 to 1.0
0
Residuals, % 0
0 to 0.15