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Solder Alloy 124 vs. ZA-8

Solder alloy 124 belongs to the otherwise unclassified metals classification, while ZA-8 belongs to the zinc alloys. There are 24 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is solder alloy 124 and the bottom bar is ZA-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 17
85 to 86
Elongation at Break, % 46
1.3 to 8.0
Poisson's Ratio 0.44
0.26
Shear Modulus, GPa 5.8
34
Tensile Strength: Ultimate (UTS), MPa 27
210 to 370

Thermal Properties

Latent Heat of Fusion, J/g 24
110
Melting Completion (Liquidus), °C 330
400
Melting Onset (Solidus), °C 320
380
Specific Heat Capacity, J/kg-K 130
440
Thermal Conductivity, W/m-K 22
120
Thermal Expansion, µm/m-K 29
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.6
28
Electrical Conductivity: Equal Weight (Specific), % IACS 7.7
40

Otherwise Unclassified Properties

Base Metal Price, % relative 70
11
Density, g/cm3 11
6.3
Embodied Carbon, kg CO2/kg material 4.1
3.3
Embodied Energy, MJ/kg 68
62
Embodied Water, L/kg 470
420

Common Calculations

Stiffness to Weight: Axial, points 0.83
7.5
Stiffness to Weight: Bending, points 7.6
23
Strength to Weight: Axial, points 0.65
9.3 to 17
Strength to Weight: Bending, points 1.8
12 to 18
Thermal Diffusivity, mm2/s 15
42
Thermal Shock Resistance, points 3.9
7.6 to 13

Alloy Composition

Aluminum (Al), % 0 to 0.0010
8.0 to 8.8
Antimony (Sb), % 0 to 0.12
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0 to 0.0060
Copper (Cu), % 0 to 0.080
0.8 to 1.3
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), % 97.2 to 98.2
0 to 0.0060
Magnesium (Mg), % 0
0.015 to 0.030
Nickel (Ni), % 0 to 0.010
0 to 0.020
Silicon (Si), % 0
0 to 0.045
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 1.8 to 2.2
0 to 0.0030
Zinc (Zn), % 0 to 0.0010
89.7 to 91.2