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Solder Alloy 161 vs. Solder Alloy 191

Both solder alloy 161 and solder alloy 191 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 44% of their average alloy composition in common. There are 22 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 161 and the bottom bar is solder alloy 191.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
19
Elongation at Break, % 44
32
Poisson's Ratio 0.39
0.43
Shear Modulus, GPa 14
6.5
Tensile Strength: Ultimate (UTS), MPa 53
29

Thermal Properties

Latent Heat of Fusion, J/g 48
27
Melting Completion (Liquidus), °C 190
300
Melting Onset (Solidus), °C 180
300
Specific Heat Capacity, J/kg-K 190
130
Thermal Conductivity, W/m-K 49
24
Thermal Expansion, µm/m-K 25
29

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 11
7.2

Otherwise Unclassified Properties

Density, g/cm3 8.9
11
Embodied Carbon, kg CO2/kg material 11
5.8
Embodied Energy, MJ/kg 180
95

Common Calculations

Stiffness to Weight: Axial, points 2.4
0.93
Stiffness to Weight: Bending, points 13
8.0
Strength to Weight: Axial, points 1.7
0.72
Strength to Weight: Bending, points 3.5
1.9
Thermal Diffusivity, mm2/s 29
16
Thermal Shock Resistance, points 4.1
3.9

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
0 to 0.1
Cadmium (Cd), % 0 to 0.0020
0 to 0.0020
Copper (Cu), % 1.2 to 1.6
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), % 37.3 to 39.3
92.4 to 94
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
1.2 to 1.8
Tin (Sn), % 59.5 to 60.5
4.8 to 5.2
Zinc (Zn), % 0 to 0.0010
0 to 0.0010