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Solder Alloy 161 vs. Solder Alloy 701

Both solder alloy 161 and solder alloy 701 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 60% 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 701.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
51
Elongation at Break, % 44
37
Poisson's Ratio 0.39
0.36
Shear Modulus, GPa 14
19
Tensile Strength: Ultimate (UTS), MPa 53
54

Thermal Properties

Latent Heat of Fusion, J/g 48
61
Melting Completion (Liquidus), °C 190
230
Melting Onset (Solidus), °C 180
220
Specific Heat Capacity, J/kg-K 190
220
Thermal Conductivity, W/m-K 49
52
Thermal Expansion, µm/m-K 25
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
14
Electrical Conductivity: Equal Weight (Specific), % IACS 11
17

Otherwise Unclassified Properties

Density, g/cm3 8.9
7.4
Embodied Carbon, kg CO2/kg material 11
18
Embodied Energy, MJ/kg 180
300

Common Calculations

Stiffness to Weight: Axial, points 2.4
3.8
Stiffness to Weight: Bending, points 13
17
Strength to Weight: Axial, points 1.7
2.0
Strength to Weight: Bending, points 3.5
4.3
Thermal Diffusivity, mm2/s 29
32
Thermal Shock Resistance, points 4.1
3.5

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0 to 0.2
0 to 0.1
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 0.050
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
0 to 0.070
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
3.5 to 3.9
Tin (Sn), % 59.5 to 60.5
95.6 to 96.5
Zinc (Zn), % 0 to 0.0010
0 to 0.0010