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Solder Alloy 702 vs. C77400 Nickel Silver

Solder alloy 702 belongs to the otherwise unclassified metals classification, while C77400 nickel silver belongs to the copper alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is solder alloy 702 and the bottom bar is C77400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
110
Elongation at Break, % 21
25
Poisson's Ratio 0.36
0.3
Shear Modulus, GPa 19
42
Tensile Strength: Ultimate (UTS), MPa 53
570

Thermal Properties

Latent Heat of Fusion, J/g 61
170
Melting Completion (Liquidus), °C 220
810
Melting Onset (Solidus), °C 220
770
Specific Heat Capacity, J/kg-K 220
390
Thermal Expansion, µm/m-K 22
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
27
Electrical Conductivity: Equal Weight (Specific), % IACS 18
31

Otherwise Unclassified Properties

Density, g/cm3 7.4
7.9
Embodied Carbon, kg CO2/kg material 17
3.5
Embodied Energy, MJ/kg 290
57

Common Calculations

Stiffness to Weight: Axial, points 3.8
7.7
Stiffness to Weight: Bending, points 17
20
Strength to Weight: Axial, points 2.0
20
Strength to Weight: Bending, points 4.2
19
Thermal Shock Resistance, points 3.4
18

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
43 to 47
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 to 0.2
Nickel (Ni), % 0 to 0.010
9.0 to 11
Silver (Ag), % 2.8 to 3.2
0
Tin (Sn), % 96.3 to 97.2
0
Zinc (Zn), % 0 to 0.0010
41.3 to 48
Residuals, % 0
0 to 0.5