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Solder Alloy 191 vs. CC497K Bronze

Solder alloy 191 belongs to the otherwise unclassified metals classification, while CC497K bronze belongs to the copper alloys. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. 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 191 and the bottom bar is CC497K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 19
93
Elongation at Break, % 32
6.7
Poisson's Ratio 0.43
0.36
Shear Modulus, GPa 6.5
34
Tensile Strength: Ultimate (UTS), MPa 29
190

Thermal Properties

Latent Heat of Fusion, J/g 27
160
Melting Completion (Liquidus), °C 300
870
Melting Onset (Solidus), °C 300
800
Specific Heat Capacity, J/kg-K 130
330
Thermal Conductivity, W/m-K 24
53
Thermal Expansion, µm/m-K 29
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.8
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
8.7

Otherwise Unclassified Properties

Density, g/cm3 11
9.3
Embodied Carbon, kg CO2/kg material 5.8
3.0
Embodied Energy, MJ/kg 95
48

Common Calculations

Stiffness to Weight: Axial, points 0.93
5.5
Stiffness to Weight: Bending, points 8.0
16
Strength to Weight: Axial, points 0.72
5.6
Strength to Weight: Bending, points 1.9
7.8
Thermal Diffusivity, mm2/s 16
17
Thermal Shock Resistance, points 3.9
7.2

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.010
Antimony (Sb), % 0 to 0.2
0 to 0.75
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
67.5 to 77.5
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.25
Lead (Pb), % 92.4 to 94
18 to 23
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0 to 0.010
0.5 to 2.5
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0
0 to 0.010
Silver (Ag), % 1.2 to 1.8
0
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 4.8 to 5.2
4.0 to 6.0
Zinc (Zn), % 0 to 0.0010
0 to 2.0