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Solder Alloy 123 vs. C66700 Brass

Solder alloy 123 belongs to the otherwise unclassified metals classification, while C66700 brass belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is solder alloy 123 and the bottom bar is C66700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
110
Elongation at Break, % 45
2.0 to 58
Poisson's Ratio 0.44
0.31
Shear Modulus, GPa 6.2
41
Tensile Strength: Ultimate (UTS), MPa 28
340 to 690

Thermal Properties

Latent Heat of Fusion, J/g 26
180
Melting Completion (Liquidus), °C 310
1090
Melting Onset (Solidus), °C 300
1050
Specific Heat Capacity, J/kg-K 130
390
Thermal Conductivity, W/m-K 23
97
Thermal Expansion, µm/m-K 29
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.8
17
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
19

Otherwise Unclassified Properties

Base Metal Price, % relative 75
25
Density, g/cm3 11
8.2
Embodied Carbon, kg CO2/kg material 4.5
2.7
Embodied Energy, MJ/kg 74
45
Embodied Water, L/kg 500
320

Common Calculations

Stiffness to Weight: Axial, points 0.9
7.3
Stiffness to Weight: Bending, points 7.8
19
Strength to Weight: Axial, points 0.69
11 to 23
Strength to Weight: Bending, points 1.8
13 to 21
Thermal Diffusivity, mm2/s 16
30
Thermal Shock Resistance, points 3.8
11 to 23

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.5
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 0 to 0.080
68.5 to 71.5
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), % 93.5 to 95.5
0 to 0.070
Manganese (Mn), % 0
0.8 to 1.5
Nickel (Ni), % 0 to 0.010
0
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 0 to 0.0010
26.3 to 30.7
Residuals, % 0
0 to 0.5