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Solder Alloy 104 vs. Solder Alloy 142

Both solder alloy 104 and solder alloy 142 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 88% of their average alloy composition in common.

For each property being compared, the top bar is solder alloy 104 and the bottom bar is solder alloy 142.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 37
33
Elongation at Break, % 46
37
Poisson's Ratio 0.39
0.4
Shear Modulus, GPa 13
12
Tensile Strength: Ultimate (UTS), MPa 51
43

Thermal Properties

Latent Heat of Fusion, J/g 45
42
Melting Completion (Liquidus), °C 190
210
Melting Onset (Solidus), °C 180
180
Specific Heat Capacity, J/kg-K 180
170
Thermal Conductivity, W/m-K 50
45
Thermal Expansion, µm/m-K 25
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
11
Electrical Conductivity: Equal Weight (Specific), % IACS 11
11

Otherwise Unclassified Properties

Density, g/cm3 8.9
9.3
Embodied Carbon, kg CO2/kg material 10
9.4
Embodied Energy, MJ/kg 180
160
Embodied Water, L/kg 900
890

Common Calculations

Stiffness to Weight: Axial, points 2.3
2.0
Stiffness to Weight: Bending, points 12
11
Strength to Weight: Axial, points 1.6
1.3
Strength to Weight: Bending, points 3.4
2.9
Thermal Diffusivity, mm2/s 30
28
Thermal Shock Resistance, points 4.0
3.7

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0 to 0.050
0 to 0.2
Arsenic (As), % 0 to 0.030
0 to 0.030
Bismuth (Bi), % 0 to 0.050
2.5 to 3.5
Cadmium (Cd), % 0 to 0.0020
0 to 0.0020
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), % 39 to 40.5
47.4 to 50
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
0 to 0.1
Tin (Sn), % 59.5 to 60.5
47.5 to 48.5
Zinc (Zn), % 0 to 0.0010
0 to 0.0010