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Solder Alloy 135 vs. Solder Alloy 136

Both solder alloy 135 and solder alloy 136 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is solder alloy 135 and the bottom bar is solder alloy 136.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 27
25
Elongation at Break, % 20
19
Poisson's Ratio 0.41
0.42
Shear Modulus, GPa 9.5
8.9
Tensile Strength: Ultimate (UTS), MPa 35
34

Thermal Properties

Latent Heat of Fusion, J/g 36
34
Melting Completion (Liquidus), °C 250
260
Melting Onset (Solidus), °C 190
190
Specific Heat Capacity, J/kg-K 160
150
Thermal Conductivity, W/m-K 42
40
Thermal Expansion, µm/m-K 27
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.5
9.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 90
90
Density, g/cm3 10
10
Embodied Carbon, kg CO2/kg material 7.3
6.8
Embodied Energy, MJ/kg 120
110
Embodied Water, L/kg 720
680

Common Calculations

Stiffness to Weight: Axial, points 1.5
1.4
Stiffness to Weight: Bending, points 9.9
9.5
Strength to Weight: Axial, points 1.0
0.92
Strength to Weight: Bending, points 2.4
2.3
Thermal Diffusivity, mm2/s 27
26
Thermal Shock Resistance, points 3.5
3.6

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0.5 to 1.8
0.5 to 2.0
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), % 67.1 to 70
71.9 to 75
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
0 to 0.1
Tin (Sn), % 29.5 to 30.5
24.5 to 25.5
Zinc (Zn), % 0 to 0.0010
0 to 0.0010