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Solder Alloy 115 vs. Solder Alloy 811

Both solder alloy 115 and solder alloy 811 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. 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 115 and the bottom bar is solder alloy 811.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 28
52
Elongation at Break, % 22
38
Poisson's Ratio 0.41
0.35
Shear Modulus, GPa 10
19
Tensile Strength: Ultimate (UTS), MPa 36
53

Thermal Properties

Latent Heat of Fusion, J/g 36
63
Melting Completion (Liquidus), °C 250
200
Melting Onset (Solidus), °C 180
190
Specific Heat Capacity, J/kg-K 160
230
Thermal Conductivity, W/m-K 43
59
Thermal Expansion, µm/m-K 27
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.8
14
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
17

Otherwise Unclassified Properties

Density, g/cm3 9.9
7.3
Embodied Carbon, kg CO2/kg material 7.8
14
Embodied Energy, MJ/kg 130
240
Embodied Water, L/kg 730
1200

Common Calculations

Stiffness to Weight: Axial, points 1.6
4.0
Stiffness to Weight: Bending, points 10
17
Strength to Weight: Axial, points 1.0
2.0
Strength to Weight: Bending, points 2.4
4.3
Thermal Diffusivity, mm2/s 27
35
Thermal Shock Resistance, points 3.4
3.3

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0 to 0.5
0 to 0.1
Arsenic (As), % 0 to 0.030
0 to 0.030
Bismuth (Bi), % 0 to 0.25
2.8 to 3.2
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), % 63.4 to 65.5
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), % 34.5 to 35.5
87.8 to 89.7
Zinc (Zn), % 0 to 0.0010
7.5 to 8.5