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Solder Alloy 721 vs. C97300 Nickel Silver

Solder alloy 721 belongs to the otherwise unclassified metals classification, while C97300 nickel silver belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is solder alloy 721 and the bottom bar is C97300 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
110
Elongation at Break, % 17
9.0
Poisson's Ratio 0.36
0.33
Shear Modulus, GPa 19
40
Tensile Strength: Ultimate (UTS), MPa 50
230

Thermal Properties

Latent Heat of Fusion, J/g 61
180
Melting Completion (Liquidus), °C 220
1040
Melting Onset (Solidus), °C 210
1010
Specific Heat Capacity, J/kg-K 220
370
Thermal Conductivity, W/m-K 56
29
Thermal Expansion, µm/m-K 22
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 17
6.3

Otherwise Unclassified Properties

Density, g/cm3 7.4
8.6
Embodied Carbon, kg CO2/kg material 17
3.7
Embodied Energy, MJ/kg 280
59

Common Calculations

Stiffness to Weight: Axial, points 3.8
7.0
Stiffness to Weight: Bending, points 17
18
Strength to Weight: Axial, points 1.9
7.6
Strength to Weight: Bending, points 4.1
9.8
Thermal Diffusivity, mm2/s 34
9.3
Thermal Shock Resistance, points 3.2
8.0

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0050
Antimony (Sb), % 0 to 0.1
0 to 0.35
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0.8 to 1.2
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0.3 to 0.7
53 to 58
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 1.5
Lead (Pb), % 0 to 0.070
8.0 to 11
Nickel (Ni), % 0 to 0.010
11 to 14
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0
0 to 0.15
Silver (Ag), % 2.3 to 2.7
0
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 95 to 96.6
1.5 to 3.0
Zinc (Zn), % 0 to 0.0010
17 to 25
Residuals, % 0
0 to 1.0