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Solder Alloy 123 vs. C38000 Brass

Solder alloy 123 belongs to the otherwise unclassified metals classification, while C38000 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 C38000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
100
Elongation at Break, % 45
17
Poisson's Ratio 0.44
0.31
Shear Modulus, GPa 6.2
39
Tensile Strength: Ultimate (UTS), MPa 28
380

Thermal Properties

Latent Heat of Fusion, J/g 26
170
Melting Completion (Liquidus), °C 310
800
Melting Onset (Solidus), °C 300
760
Specific Heat Capacity, J/kg-K 130
380
Thermal Conductivity, W/m-K 23
110
Thermal Expansion, µm/m-K 29
21

Otherwise Unclassified Properties

Base Metal Price, % relative 75
22
Density, g/cm3 11
8.0
Embodied Carbon, kg CO2/kg material 4.5
2.7
Embodied Energy, MJ/kg 74
46
Embodied Water, L/kg 500
330

Common Calculations

Stiffness to Weight: Axial, points 0.9
7.1
Stiffness to Weight: Bending, points 7.8
19
Strength to Weight: Axial, points 0.69
13
Strength to Weight: Bending, points 1.8
14
Thermal Diffusivity, mm2/s 16
37
Thermal Shock Resistance, points 3.8
13

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.5
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
55 to 60
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.35
Lead (Pb), % 93.5 to 95.5
1.5 to 2.5
Nickel (Ni), % 0 to 0.010
0
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 4.5 to 5.5
0 to 0.3
Zinc (Zn), % 0 to 0.0010
35.9 to 43.5
Residuals, % 0
0 to 0.5