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Solder Alloy 171 vs. Solder Alloy 141

Both solder alloy 171 and solder alloy 141 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 96% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is solder alloy 171 and the bottom bar is solder alloy 141.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
37
Elongation at Break, % 45
39
Poisson's Ratio 0.39
0.39
Shear Modulus, GPa 14
13
Tensile Strength: Ultimate (UTS), MPa 48
54

Thermal Properties

Latent Heat of Fusion, J/g 47
46
Melting Completion (Liquidus), °C 180
190
Melting Onset (Solidus), °C 180
180
Specific Heat Capacity, J/kg-K 190
180
Thermal Conductivity, W/m-K 50
48
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
10
Electrical Conductivity: Equal Weight (Specific), % IACS 12
10

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.9
Embodied Carbon, kg CO2/kg material 13
11
Embodied Energy, MJ/kg 210
180

Common Calculations

Stiffness to Weight: Axial, points 2.4
2.3
Stiffness to Weight: Bending, points 13
13
Strength to Weight: Axial, points 1.5
1.7
Strength to Weight: Bending, points 3.3
3.6
Thermal Diffusivity, mm2/s 30
29
Thermal Shock Resistance, points 3.7
4.3

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0 to 0.2
0 to 0.2
Arsenic (As), % 0 to 0.030
0 to 0.030
Bismuth (Bi), % 0 to 0.1
2.0 to 3.0
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), % 34.7 to 36.7
35.9 to 38.5
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 1.8 to 2.2
0 to 0.1
Tin (Sn), % 61.5 to 62.5
59.5 to 60.5
Zinc (Zn), % 0 to 0.0010
0 to 0.0010