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Solder Alloy 703 vs. Solder Alloy 714

Both solder alloy 703 and solder alloy 714 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. Their average alloy composition is basically identical.

For each property being compared, the top bar is solder alloy 703 and the bottom bar is solder alloy 714.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 15
15
Elastic (Young's, Tensile) Modulus, GPa 51
51
Elongation at Break, % 35
17
Poisson's Ratio 0.36
0.36
Shear Modulus, GPa 19
19
Tensile Strength: Ultimate (UTS), MPa 57
52

Thermal Properties

Latent Heat of Fusion, J/g 61
62
Melting Completion (Liquidus), °C 220
220
Melting Onset (Solidus), °C 220
220
Specific Heat Capacity, J/kg-K 220
220
Thermal Conductivity, W/m-K 55
62
Thermal Expansion, µm/m-K 22
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
13
Electrical Conductivity: Equal Weight (Specific), % IACS 17
16

Otherwise Unclassified Properties

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

Common Calculations

Stiffness to Weight: Axial, points 3.8
3.8
Stiffness to Weight: Bending, points 17
17
Strength to Weight: Axial, points 2.1
1.9
Strength to Weight: Bending, points 4.4
4.2
Thermal Diffusivity, mm2/s 33
37
Thermal Shock Resistance, points 3.7
3.3

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0 to 0.1
0 to 0.1
Arsenic (As), % 0 to 0.030
0 to 0.030
Bismuth (Bi), % 0 to 0.1
0 to 0.1
Cadmium (Cd), % 0 to 0.0020
0 to 0.0020
Copper (Cu), % 0 to 0.050
0.3 to 0.7
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), % 0 to 0.070
0 to 0.070
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 3.3 to 3.7
3.8 to 4.2
Tin (Sn), % 95.8 to 96.7
94.6 to 95.9
Zinc (Zn), % 0 to 0.0010
0 to 0.0010