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AZ91B Magnesium vs. Solder Alloy 102

AZ91B magnesium belongs to the magnesium alloys classification, while solder alloy 102 belongs to the otherwise unclassified metals. There are 23 material properties with values for both materials. Properties with values for just one material (10, 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 AZ91B magnesium and the bottom bar is solder alloy 102.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
38
Elongation at Break, % 5.0
48
Poisson's Ratio 0.29
0.39
Shear Modulus, GPa 18
14
Tensile Strength: Ultimate (UTS), MPa 240
31

Thermal Properties

Latent Heat of Fusion, J/g 360
46
Melting Completion (Liquidus), °C 600
180
Melting Onset (Solidus), °C 470
180
Specific Heat Capacity, J/kg-K 990
190
Thermal Conductivity, W/m-K 73
53
Thermal Expansion, µm/m-K 26
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
12
Electrical Conductivity: Equal Weight (Specific), % IACS 58
13

Otherwise Unclassified Properties

Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 22
11
Embodied Energy, MJ/kg 160
180
Embodied Water, L/kg 990
930

Common Calculations

Stiffness to Weight: Axial, points 15
2.4
Stiffness to Weight: Bending, points 69
13
Strength to Weight: Axial, points 38
1.0
Strength to Weight: Bending, points 49
2.5
Thermal Diffusivity, mm2/s 42
32
Thermal Shock Resistance, points 14
2.4

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0 to 0.0010
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.050
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 0 to 0.35
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
36 to 37.5
Magnesium (Mg), % 87.9 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0
Nickel (Ni), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
62.5 to 63.5
Zinc (Zn), % 0.35 to 1.0
0 to 0.0010