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Solder Alloy 704 vs. ZA-12

Solder alloy 704 belongs to the otherwise unclassified metals classification, while ZA-12 belongs to the zinc alloys. There are 23 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is solder alloy 704 and the bottom bar is ZA-12.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 14
89 to 100
Elastic (Young's, Tensile) Modulus, GPa 51
83
Elongation at Break, % 30
1.6 to 5.3
Poisson's Ratio 0.36
0.26
Shear Modulus, GPa 19
33
Tensile Strength: Ultimate (UTS), MPa 55
260 to 400

Thermal Properties

Latent Heat of Fusion, J/g 62
120
Melting Completion (Liquidus), °C 240
430
Melting Onset (Solidus), °C 220
380
Specific Heat Capacity, J/kg-K 220
450
Thermal Conductivity, W/m-K 50
120
Thermal Expansion, µm/m-K 22
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
28
Electrical Conductivity: Equal Weight (Specific), % IACS 15
42

Otherwise Unclassified Properties

Density, g/cm3 7.5
6.0
Embodied Carbon, kg CO2/kg material 19
3.4
Embodied Energy, MJ/kg 320
64

Common Calculations

Stiffness to Weight: Axial, points 3.8
7.6
Stiffness to Weight: Bending, points 17
24
Strength to Weight: Axial, points 2.1
12 to 19
Strength to Weight: Bending, points 4.3
15 to 20
Thermal Diffusivity, mm2/s 30
43
Thermal Shock Resistance, points 3.5
9.4 to 14

Alloy Composition

Aluminum (Al), % 0 to 0.0010
10.5 to 11.5
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0 to 0.0060
Copper (Cu), % 0 to 0.050
0.5 to 1.2
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.075
Lead (Pb), % 0 to 0.070
0 to 0.0060
Magnesium (Mg), % 0
0.015 to 0.030
Nickel (Ni), % 0 to 0.010
0 to 0.020
Silicon (Si), % 0
0 to 0.060
Silver (Ag), % 4.8 to 5.2
0
Tin (Sn), % 94.3 to 95.2
0 to 0.0030
Zinc (Zn), % 0 to 0.0010
87.1 to 89