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Solder Alloy 181 vs. C51900 Bronze

Solder alloy 181 belongs to the otherwise unclassified metals classification, while C51900 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 181 and the bottom bar is C51900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
110
Elongation at Break, % 41
14 to 29
Poisson's Ratio 0.44
0.34
Shear Modulus, GPa 6.1
42
Tensile Strength: Ultimate (UTS), MPa 27
380 to 620

Thermal Properties

Latent Heat of Fusion, J/g 26
200
Melting Completion (Liquidus), °C 310
1040
Melting Onset (Solidus), °C 300
930
Specific Heat Capacity, J/kg-K 130
380
Thermal Conductivity, W/m-K 24
66
Thermal Expansion, µm/m-K 29
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
14
Electrical Conductivity: Equal Weight (Specific), % IACS 7.4
14

Otherwise Unclassified Properties

Density, g/cm3 11
8.8
Embodied Carbon, kg CO2/kg material 6.2
3.2
Embodied Energy, MJ/kg 100
51

Common Calculations

Stiffness to Weight: Axial, points 0.86
7.0
Stiffness to Weight: Bending, points 7.7
18
Strength to Weight: Axial, points 0.66
12 to 19
Strength to Weight: Bending, points 1.8
13 to 18
Thermal Diffusivity, mm2/s 16
20
Thermal Shock Resistance, points 3.8
14 to 22

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.2
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 0.080
91.7 to 95
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), % 96.2 to 98
0 to 0.050
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0.030 to 0.35
Silver (Ag), % 2.0 to 3.0
0
Tin (Sn), % 0 to 0.25
5.0 to 7.0
Zinc (Zn), % 0 to 0.0010
0 to 0.3
Residuals, % 0
0 to 0.5