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Solder Alloy 123 vs. C69700 Brass

Solder alloy 123 belongs to the otherwise unclassified metals classification, while C69700 brass belongs to the copper alloys. There are 22 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 C69700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
110
Elongation at Break, % 45
25
Poisson's Ratio 0.44
0.32
Shear Modulus, GPa 6.2
41
Tensile Strength: Ultimate (UTS), MPa 28
470

Thermal Properties

Latent Heat of Fusion, J/g 26
240
Melting Completion (Liquidus), °C 310
930
Melting Onset (Solidus), °C 300
880
Specific Heat Capacity, J/kg-K 130
400
Thermal Conductivity, W/m-K 23
43
Thermal Expansion, µm/m-K 29
19

Otherwise Unclassified Properties

Base Metal Price, % relative 75
26
Density, g/cm3 11
8.3
Embodied Carbon, kg CO2/kg material 4.5
2.7
Embodied Energy, MJ/kg 74
44
Embodied Water, L/kg 500
310

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
16
Strength to Weight: Bending, points 1.8
16
Thermal Diffusivity, mm2/s 16
13
Thermal Shock Resistance, points 3.8
16

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
75 to 80
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.2
Lead (Pb), % 93.5 to 95.5
0.5 to 1.5
Manganese (Mn), % 0
0 to 0.4
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
2.5 to 3.5
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 0 to 0.0010
13.9 to 22
Residuals, % 0
0 to 0.5