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Solder Alloy 181 vs. CC751S Brass

Solder alloy 181 belongs to the otherwise unclassified metals classification, while CC751S brass belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is solder alloy 181 and the bottom bar is CC751S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
110
Elongation at Break, % 41
5.6
Poisson's Ratio 0.44
0.31
Shear Modulus, GPa 6.1
40
Tensile Strength: Ultimate (UTS), MPa 27
450

Thermal Properties

Latent Heat of Fusion, J/g 26
190
Melting Completion (Liquidus), °C 310
850
Melting Onset (Solidus), °C 300
810
Specific Heat Capacity, J/kg-K 130
390
Thermal Conductivity, W/m-K 24
110
Thermal Expansion, µm/m-K 29
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
25
Electrical Conductivity: Equal Weight (Specific), % IACS 7.4
28

Otherwise Unclassified Properties

Density, g/cm3 11
8.1
Embodied Carbon, kg CO2/kg material 6.2
2.8
Embodied Energy, MJ/kg 100
46

Common Calculations

Stiffness to Weight: Axial, points 0.86
7.2
Stiffness to Weight: Bending, points 7.7
19
Strength to Weight: Axial, points 0.66
15
Strength to Weight: Bending, points 1.8
16
Thermal Diffusivity, mm2/s 16
35
Thermal Shock Resistance, points 3.8
15

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.1
Antimony (Sb), % 0 to 0.2
0 to 0.5
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 0.080
62.7 to 66
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0.25 to 0.5
Lead (Pb), % 96.2 to 98
0.8 to 2.2
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0 to 0.010
0 to 0.8
Silicon (Si), % 0
0.65 to 1.1
Silver (Ag), % 2.0 to 3.0
0
Tin (Sn), % 0 to 0.25
0 to 0.8
Zinc (Zn), % 0 to 0.0010
27.9 to 35.6