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Solder Alloy 123 vs. ISO-WD32350 Magnesium

Solder alloy 123 belongs to the otherwise unclassified metals classification, while ISO-WD32350 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 123 and the bottom bar is ISO-WD32350 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
45
Elongation at Break, % 45
5.7 to 10
Poisson's Ratio 0.44
0.29
Shear Modulus, GPa 6.2
18
Tensile Strength: Ultimate (UTS), MPa 28
250 to 290

Thermal Properties

Latent Heat of Fusion, J/g 26
340
Melting Completion (Liquidus), °C 310
600
Melting Onset (Solidus), °C 300
560
Specific Heat Capacity, J/kg-K 130
990
Thermal Conductivity, W/m-K 23
130
Thermal Expansion, µm/m-K 29
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.8
25
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
130

Otherwise Unclassified Properties

Base Metal Price, % relative 75
12
Density, g/cm3 11
1.7
Embodied Carbon, kg CO2/kg material 4.5
23
Embodied Energy, MJ/kg 74
160
Embodied Water, L/kg 500
960

Common Calculations

Stiffness to Weight: Axial, points 0.9
15
Stiffness to Weight: Bending, points 7.8
68
Strength to Weight: Axial, points 0.69
39 to 46
Strength to Weight: Bending, points 1.8
50 to 55
Thermal Diffusivity, mm2/s 16
73
Thermal Shock Resistance, points 3.8
16 to 18

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.1
Antimony (Sb), % 0 to 0.5
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 0 to 0.080
0 to 0.1
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.060
Lead (Pb), % 93.5 to 95.5
0
Magnesium (Mg), % 0
95.7 to 97.7
Manganese (Mn), % 0
0.6 to 1.3
Nickel (Ni), % 0 to 0.010
0 to 0.0050
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 0 to 0.0010
1.8 to 2.3
Residuals, % 0
0 to 0.3