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AZ81A Magnesium vs. Solder Alloy 111

AZ81A magnesium belongs to the magnesium alloys classification, while solder alloy 111 belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AZ81A magnesium and the bottom bar is solder alloy 111.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
14
Elastic (Young's, Tensile) Modulus, GPa 46
33
Elongation at Break, % 3.0 to 8.8
35
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 18
12
Tensile Strength: Ultimate (UTS), MPa 160 to 240
41

Thermal Properties

Latent Heat of Fusion, J/g 350
41
Melting Completion (Liquidus), °C 600
220
Melting Onset (Solidus), °C 500
180
Specific Heat Capacity, J/kg-K 990
180
Thermal Conductivity, W/m-K 84
48
Thermal Expansion, µm/m-K 27
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
11
Electrical Conductivity: Equal Weight (Specific), % IACS 65
11

Otherwise Unclassified Properties

Density, g/cm3 1.7
9.3
Embodied Carbon, kg CO2/kg material 23
9.4
Embodied Energy, MJ/kg 160
160
Embodied Water, L/kg 990
830

Common Calculations

Stiffness to Weight: Axial, points 15
2.0
Stiffness to Weight: Bending, points 70
12
Strength to Weight: Axial, points 26 to 39
1.2
Strength to Weight: Bending, points 38 to 50
2.8
Thermal Diffusivity, mm2/s 50
29
Thermal Shock Resistance, points 9.1 to 14
3.5

Alloy Composition


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Aluminum (Al), % 7.0 to 8.1
0 to 0.0010
Antimony (Sb), % 0
0 to 0.2
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 0 to 0.1
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0
0 to 0.020
Lead (Pb), % 0
48.8 to 50.5
Magnesium (Mg), % 89.8 to 92.5
0
Manganese (Mn), % 0.13 to 0.35
0
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silicon (Si), % 0 to 0.3
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
49.5 to 50.5
Zinc (Zn), % 0.4 to 1.0
0 to 0.0010
Residuals, % 0 to 0.3
0