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Solder Alloy 703 vs. C67300 Bronze

Solder alloy 703 belongs to the otherwise unclassified metals classification, while C67300 bronze belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is solder alloy 703 and the bottom bar is C67300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
110
Elongation at Break, % 35
12
Poisson's Ratio 0.36
0.31
Shear Modulus, GPa 19
41
Tensile Strength: Ultimate (UTS), MPa 57
500

Thermal Properties

Latent Heat of Fusion, J/g 61
190
Melting Completion (Liquidus), °C 220
870
Melting Onset (Solidus), °C 220
830
Specific Heat Capacity, J/kg-K 220
390
Thermal Conductivity, W/m-K 55
95
Thermal Expansion, µm/m-K 22
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
22
Electrical Conductivity: Equal Weight (Specific), % IACS 17
25

Otherwise Unclassified Properties

Density, g/cm3 7.4
8.0
Embodied Carbon, kg CO2/kg material 18
2.7
Embodied Energy, MJ/kg 300
46

Common Calculations

Stiffness to Weight: Axial, points 3.8
7.4
Stiffness to Weight: Bending, points 17
20
Strength to Weight: Axial, points 2.1
17
Strength to Weight: Bending, points 4.4
17
Thermal Diffusivity, mm2/s 33
30
Thermal Shock Resistance, points 3.7
16

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.25
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
58 to 63
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.5
Lead (Pb), % 0 to 0.070
0.4 to 3.0
Manganese (Mn), % 0
2.0 to 3.5
Nickel (Ni), % 0 to 0.010
0 to 0.25
Silicon (Si), % 0
0.5 to 1.5
Silver (Ag), % 3.3 to 3.7
0
Tin (Sn), % 95.8 to 96.7
0 to 0.3
Zinc (Zn), % 0 to 0.0010
27.2 to 39.1
Residuals, % 0
0 to 0.5