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Solder Alloy 103 vs. Solder Alloy 811

Both solder alloy 103 and solder alloy 811 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.

For each property being compared, the top bar is solder alloy 103 and the bottom bar is solder alloy 811.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 37
52
Elongation at Break, % 47
38
Poisson's Ratio 0.39
0.35
Shear Modulus, GPa 13
19
Tensile Strength: Ultimate (UTS), MPa 52
53

Thermal Properties

Latent Heat of Fusion, J/g 45
63
Melting Completion (Liquidus), °C 190
200
Melting Onset (Solidus), °C 180
190
Specific Heat Capacity, J/kg-K 180
230
Thermal Conductivity, W/m-K 50
59
Thermal Expansion, µm/m-K 24
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
14
Electrical Conductivity: Equal Weight (Specific), % IACS 12
17

Otherwise Unclassified Properties

Density, g/cm3 8.9
7.3
Embodied Carbon, kg CO2/kg material 10
14
Embodied Energy, MJ/kg 180
240
Embodied Water, L/kg 910
1200

Common Calculations

Stiffness to Weight: Axial, points 2.3
4.0
Stiffness to Weight: Bending, points 12
17
Strength to Weight: Axial, points 1.6
2.0
Strength to Weight: Bending, points 3.5
4.3
Thermal Diffusivity, mm2/s 30
35
Thermal Shock Resistance, points 4.3
3.3

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
2.8 to 3.2
Cadmium (Cd), % 0 to 0.0020
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), % 38.8 to 40.5
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), % 59.5 to 60.5
87.8 to 89.7
Zinc (Zn), % 0 to 0.0010
7.5 to 8.5