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Solder Alloy 113 vs. Solder Alloy 121

Both solder alloy 113 and solder alloy 121 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 70% of their average alloy composition in common. There are 23 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 113 and the bottom bar is solder alloy 121.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 32
21
Elongation at Break, % 32
25
Poisson's Ratio 0.4
0.43
Shear Modulus, GPa 11
7.5
Tensile Strength: Ultimate (UTS), MPa 39
32

Thermal Properties

Latent Heat of Fusion, J/g 40
29
Melting Completion (Liquidus), °C 230
290
Melting Onset (Solidus), °C 180
230
Specific Heat Capacity, J/kg-K 170
140
Thermal Conductivity, W/m-K 46
31
Thermal Expansion, µm/m-K 26
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 9.8
7.4

Otherwise Unclassified Properties

Density, g/cm3 9.5
11
Embodied Carbon, kg CO2/kg material 8.9
5.6
Embodied Energy, MJ/kg 150
93
Embodied Water, L/kg 800
580

Common Calculations

Stiffness to Weight: Axial, points 1.8
1.1
Stiffness to Weight: Bending, points 11
8.6
Strength to Weight: Axial, points 1.1
0.84
Strength to Weight: Bending, points 2.7
2.1
Thermal Diffusivity, mm2/s 28
20
Thermal Shock Resistance, points 3.4
3.9

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0 to 0.5
0 to 0.5
Arsenic (As), % 0 to 0.030
0 to 0.030
Bismuth (Bi), % 0 to 0.25
0 to 0.25
Cadmium (Cd), % 0 to 0.0050
0 to 0.0050
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), % 53.4 to 55.5
83.4 to 85.5
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
0 to 0.1
Tin (Sn), % 44.5 to 45.5
14.5 to 15.5
Zinc (Zn), % 0 to 0.0010
0 to 0.0010