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Solder Alloy 123 vs. Zamak 7

Solder alloy 123 belongs to the otherwise unclassified metals classification, while Zamak 7 belongs to the zinc alloys. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is solder alloy 123 and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 8.0
80
Elastic (Young's, Tensile) Modulus, GPa 18
86
Elongation at Break, % 45
13
Poisson's Ratio 0.44
0.25
Shear Modulus, GPa 6.2
33
Tensile Strength: Ultimate (UTS), MPa 28
280

Thermal Properties

Latent Heat of Fusion, J/g 26
120
Melting Completion (Liquidus), °C 310
390
Melting Onset (Solidus), °C 300
380
Specific Heat Capacity, J/kg-K 130
410
Thermal Conductivity, W/m-K 23
110
Thermal Expansion, µm/m-K 29
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.8
27
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
38

Otherwise Unclassified Properties

Base Metal Price, % relative 75
11
Density, g/cm3 11
6.4
Embodied Carbon, kg CO2/kg material 4.5
3.0
Embodied Energy, MJ/kg 74
57
Embodied Water, L/kg 500
380

Common Calculations

Stiffness to Weight: Axial, points 0.9
7.5
Stiffness to Weight: Bending, points 7.8
23
Strength to Weight: Axial, points 0.69
12
Strength to Weight: Bending, points 1.8
15
Thermal Diffusivity, mm2/s 16
43
Thermal Shock Resistance, points 3.8
8.6

Alloy Composition

Aluminum (Al), % 0 to 0.0010
3.5 to 4.3
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 to 0.0020
Copper (Cu), % 0 to 0.080
0 to 0.25
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.075
Lead (Pb), % 93.5 to 95.5
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Nickel (Ni), % 0 to 0.010
0.0050 to 0.020
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 4.5 to 5.5
0 to 0.0010
Zinc (Zn), % 0 to 0.0010
95.3 to 96.5