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Solder Alloy 704 vs. Zamak 5

Solder alloy 704 belongs to the otherwise unclassified metals classification, while Zamak 5 belongs to the zinc alloys. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is solder alloy 704 and the bottom bar is Zamak 5.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 14
92
Elastic (Young's, Tensile) Modulus, GPa 51
87
Elongation at Break, % 30
6.3
Poisson's Ratio 0.36
0.25
Shear Modulus, GPa 19
33
Tensile Strength: Ultimate (UTS), MPa 55
330

Thermal Properties

Latent Heat of Fusion, J/g 62
120
Melting Completion (Liquidus), °C 240
390
Melting Onset (Solidus), °C 220
380
Specific Heat Capacity, J/kg-K 220
410
Thermal Conductivity, W/m-K 50
110
Thermal Expansion, µm/m-K 22
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
26
Electrical Conductivity: Equal Weight (Specific), % IACS 15
37

Otherwise Unclassified Properties

Density, g/cm3 7.5
6.4
Embodied Carbon, kg CO2/kg material 19
3.0
Embodied Energy, MJ/kg 320
57

Common Calculations

Stiffness to Weight: Axial, points 3.8
7.5
Stiffness to Weight: Bending, points 17
23
Strength to Weight: Axial, points 2.1
14
Strength to Weight: Bending, points 4.3
16
Thermal Diffusivity, mm2/s 30
42
Thermal Shock Resistance, points 3.5
9.9

Alloy Composition

Aluminum (Al), % 0 to 0.0010
3.5 to 4.3
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 0.0050
Copper (Cu), % 0 to 0.050
0.7 to 1.3
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.1
Lead (Pb), % 0 to 0.070
0 to 0.0050
Magnesium (Mg), % 0
0.025 to 0.080
Nickel (Ni), % 0 to 0.010
0 to 0.020
Silicon (Si), % 0
0 to 0.030
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
94.3 to 95.7