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AZ91B Magnesium vs. Solder Alloy 141

AZ91B magnesium belongs to the magnesium alloys classification, while solder alloy 141 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 141.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
37
Elongation at Break, % 5.0
39
Poisson's Ratio 0.29
0.39
Shear Modulus, GPa 18
13
Tensile Strength: Ultimate (UTS), MPa 240
54

Thermal Properties

Latent Heat of Fusion, J/g 360
46
Melting Completion (Liquidus), °C 600
190
Melting Onset (Solidus), °C 470
180
Specific Heat Capacity, J/kg-K 990
180
Thermal Conductivity, W/m-K 73
48
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
10
Electrical Conductivity: Equal Weight (Specific), % IACS 58
10

Otherwise Unclassified Properties

Density, g/cm3 1.7
8.9
Embodied Carbon, kg CO2/kg material 22
11
Embodied Energy, MJ/kg 160
180
Embodied Water, L/kg 990
970

Common Calculations

Stiffness to Weight: Axial, points 15
2.3
Stiffness to Weight: Bending, points 69
13
Strength to Weight: Axial, points 38
1.7
Strength to Weight: Bending, points 49
3.6
Thermal Diffusivity, mm2/s 42
29
Thermal Shock Resistance, points 14
4.3

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0 to 0.0010
Antimony (Sb), % 0
0 to 0.2
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
2.0 to 3.0
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
35.9 to 38.5
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
59.5 to 60.5
Zinc (Zn), % 0.35 to 1.0
0 to 0.0010