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Solder Alloy 122 vs. ISO-WD32260 Magnesium

Solder alloy 122 belongs to the otherwise unclassified metals classification, while ISO-WD32260 magnesium belongs to the magnesium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 solder alloy 122 and the bottom bar is ISO-WD32260 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 20
46
Elongation at Break, % 30
4.5 to 6.0
Poisson's Ratio 0.43
0.29
Shear Modulus, GPa 6.9
18
Tensile Strength: Ultimate (UTS), MPa 30
330 to 340

Thermal Properties

Latent Heat of Fusion, J/g 27
330
Melting Completion (Liquidus), °C 300
600
Melting Onset (Solidus), °C 270
520
Specific Heat Capacity, J/kg-K 140
970
Thermal Conductivity, W/m-K 25
110
Thermal Expansion, µm/m-K 28
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
28
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
140

Otherwise Unclassified Properties

Base Metal Price, % relative 75
13
Density, g/cm3 11
1.9
Embodied Carbon, kg CO2/kg material 5.0
23
Embodied Energy, MJ/kg 84
160
Embodied Water, L/kg 540
940

Common Calculations

Stiffness to Weight: Axial, points 1.0
13
Stiffness to Weight: Bending, points 8.2
63
Strength to Weight: Axial, points 0.77
48 to 51
Strength to Weight: Bending, points 2.0
56 to 58
Thermal Diffusivity, mm2/s 17
63
Thermal Shock Resistance, points 3.9
19 to 20

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.5
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.25
0
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 0 to 0.080
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0
Lead (Pb), % 88.4 to 90.5
0
Magnesium (Mg), % 0
92.7 to 94.8
Nickel (Ni), % 0 to 0.010
0
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 9.5 to 10.5
0
Zinc (Zn), % 0 to 0.0010
4.8 to 6.2
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3