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Solder Alloy 104 vs. Solder Alloy 151

Both solder alloy 104 and solder alloy 151 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 82% 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 151.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 37
39
Elongation at Break, % 46
37
Poisson's Ratio 0.39
0.37
Shear Modulus, GPa 13
14
Tensile Strength: Ultimate (UTS), MPa 51
46

Thermal Properties

Latent Heat of Fusion, J/g 45
47
Melting Completion (Liquidus), °C 190
150
Melting Onset (Solidus), °C 180
150
Specific Heat Capacity, J/kg-K 180
190
Thermal Conductivity, W/m-K 50
44
Thermal Expansion, µm/m-K 25
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
10
Electrical Conductivity: Equal Weight (Specific), % IACS 11
10

Otherwise Unclassified Properties

Density, g/cm3 8.9
8.8
Embodied Carbon, kg CO2/kg material 10
9.2
Embodied Energy, MJ/kg 180
160
Embodied Water, L/kg 900
920

Common Calculations

Stiffness to Weight: Axial, points 2.3
2.5
Stiffness to Weight: Bending, points 12
13
Strength to Weight: Axial, points 1.6
1.4
Strength to Weight: Bending, points 3.4
3.2
Thermal Diffusivity, mm2/s 30
26
Thermal Shock Resistance, points 4.0
3.2

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
0 to 0.1
Cadmium (Cd), % 0 to 0.0020
17.5 to 18.5
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
30.3 to 33
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
49.5 to 50.5
Zinc (Zn), % 0 to 0.0010
0 to 0.0010