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Solder Alloy 134 vs. Solder Alloy 712

Both solder alloy 134 and solder alloy 712 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 40% of their average alloy composition in common. There are 22 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 134 and the bottom bar is solder alloy 712.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 31
51
Elongation at Break, % 31
22
Poisson's Ratio 0.4
0.36
Shear Modulus, GPa 11
19
Tensile Strength: Ultimate (UTS), MPa 38
51

Thermal Properties

Latent Heat of Fusion, J/g 41
62
Melting Completion (Liquidus), °C 230
220
Melting Onset (Solidus), °C 190
220
Specific Heat Capacity, J/kg-K 170
220
Thermal Conductivity, W/m-K 45
58
Thermal Expansion, µm/m-K 26
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
13
Electrical Conductivity: Equal Weight (Specific), % IACS 9.6
16

Otherwise Unclassified Properties

Density, g/cm3 9.6
7.4
Embodied Carbon, kg CO2/kg material 8.5
18
Embodied Energy, MJ/kg 140
300

Common Calculations

Stiffness to Weight: Axial, points 1.8
3.8
Stiffness to Weight: Bending, points 11
17
Strength to Weight: Axial, points 1.1
1.9
Strength to Weight: Bending, points 2.6
4.1
Thermal Diffusivity, mm2/s 28
35
Thermal Shock Resistance, points 3.4
3.3

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 2.0 to 2.4
0 to 0.1
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
0.5 to 0.9
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), % 56.5 to 58.5
0 to 0.070
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
3.3 to 3.7
Tin (Sn), % 39.5 to 40.5
94.9 to 96.2
Zinc (Zn), % 0 to 0.0010
0 to 0.0010