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Solder Alloy 702 vs. C55280 Copper

Solder alloy 702 belongs to the otherwise unclassified metals classification, while C55280 copper belongs to the copper alloys. There are 17 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is solder alloy 702 and the bottom bar is C55280 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
110
Poisson's Ratio 0.36
0.34
Shear Modulus, GPa 19
40
Tensile Strength: Ultimate (UTS), MPa 53
180

Thermal Properties

Latent Heat of Fusion, J/g 61
190
Melting Completion (Liquidus), °C 220
790
Melting Onset (Solidus), °C 220
640
Specific Heat Capacity, J/kg-K 220
410
Thermal Expansion, µm/m-K 22
16

Otherwise Unclassified Properties

Density, g/cm3 7.4
8.5
Embodied Carbon, kg CO2/kg material 17
4.2
Embodied Energy, MJ/kg 290
67

Common Calculations

Stiffness to Weight: Axial, points 3.8
6.9
Stiffness to Weight: Bending, points 17
19
Strength to Weight: Axial, points 2.0
5.9
Strength to Weight: Bending, points 4.2
8.3
Thermal Shock Resistance, points 3.4
7.4

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
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
Copper (Cu), % 0 to 0.050
90.5 to 91.4
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0
Lead (Pb), % 0 to 0.070
0
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
6.8 to 7.2
Silver (Ag), % 2.8 to 3.2
1.8 to 2.2
Tin (Sn), % 96.3 to 97.2
0
Zinc (Zn), % 0 to 0.0010
0
Residuals, % 0
0 to 0.15