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Solder Alloy 117 vs. Solder Alloy 201

Both solder alloy 117 and solder alloy 201 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 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 117 and the bottom bar is solder alloy 201.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 11
13
Elastic (Young's, Tensile) Modulus, GPa 23
50
Elongation at Break, % 20
38
Poisson's Ratio 0.42
0.35
Shear Modulus, GPa 8.1
19
Tensile Strength: Ultimate (UTS), MPa 33
41

Thermal Properties

Latent Heat of Fusion, J/g 31
64
Melting Completion (Liquidus), °C 280
240
Melting Onset (Solidus), °C 180
240
Specific Heat Capacity, J/kg-K 150
220
Thermal Conductivity, W/m-K 37
28
Thermal Expansion, µm/m-K 28
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.7
12
Electrical Conductivity: Equal Weight (Specific), % IACS 7.5
15

Otherwise Unclassified Properties

Density, g/cm3 11
7.3
Embodied Carbon, kg CO2/kg material 6.1
15
Embodied Energy, MJ/kg 100
250
Embodied Water, L/kg 610
1320

Common Calculations

Stiffness to Weight: Axial, points 1.2
3.8
Stiffness to Weight: Bending, points 9.0
17
Strength to Weight: Axial, points 0.88
1.6
Strength to Weight: Bending, points 2.2
3.6
Thermal Diffusivity, mm2/s 24
17
Thermal Shock Resistance, points 3.7
2.7

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0 to 0.5
4.5 to 5.5
Arsenic (As), % 0 to 0.030
0 to 0.030
Bismuth (Bi), % 0 to 0.25
0 to 0.1
Cadmium (Cd), % 0 to 0.0050
0 to 0.0020
Copper (Cu), % 0 to 0.080
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), % 78.4 to 80.5
0 to 0.070
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
0 to 0.1
Tin (Sn), % 19.5 to 20.5
94 to 95.5
Zinc (Zn), % 0 to 0.0010
0 to 0.0010