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Solder Alloy 136 vs. Solder Alloy 123

Both solder alloy 136 and solder alloy 123 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 79% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is solder alloy 136 and the bottom bar is solder alloy 123.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 25
18
Elongation at Break, % 19
45
Poisson's Ratio 0.42
0.44
Shear Modulus, GPa 8.9
6.2
Tensile Strength: Ultimate (UTS), MPa 34
28

Thermal Properties

Latent Heat of Fusion, J/g 34
26
Melting Completion (Liquidus), °C 260
310
Melting Onset (Solidus), °C 190
300
Specific Heat Capacity, J/kg-K 150
130
Thermal Conductivity, W/m-K 40
23
Thermal Expansion, µm/m-K 27
29

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.2
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 90
75
Density, g/cm3 10
11
Embodied Carbon, kg CO2/kg material 6.8
4.5
Embodied Energy, MJ/kg 110
74
Embodied Water, L/kg 680
500

Common Calculations

Stiffness to Weight: Axial, points 1.4
0.9
Stiffness to Weight: Bending, points 9.5
7.8
Strength to Weight: Axial, points 0.92
0.69
Strength to Weight: Bending, points 2.3
1.8
Thermal Diffusivity, mm2/s 26
16
Thermal Shock Resistance, points 3.6
3.8

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0.5 to 2.0
0 to 0.5
Arsenic (As), % 0 to 0.030
0 to 0.030
Bismuth (Bi), % 0 to 0.25
0 to 0.1
Cadmium (Cd), % 0 to 0.0050
0 to 0.0050
Copper (Cu), % 0 to 0.080
0 to 0.080
Gold (Au), % 0 to 0.050
0 to 0.050
Indium (In), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.020
0 to 0.020
Lead (Pb), % 71.9 to 75
93.5 to 95.5
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
0 to 0.1
Tin (Sn), % 24.5 to 25.5
4.5 to 5.5
Zinc (Zn), % 0 to 0.0010
0 to 0.0010