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C67300 Bronze vs. Solder Alloy 121

C67300 bronze belongs to the copper alloys classification, while solder alloy 121 belongs to the otherwise unclassified metals. There are 24 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 C67300 bronze and the bottom bar is solder alloy 121.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
21
Elongation at Break, % 12
25
Poisson's Ratio 0.31
0.43
Shear Modulus, GPa 41
7.5
Tensile Strength: Ultimate (UTS), MPa 500
32

Thermal Properties

Latent Heat of Fusion, J/g 190
29
Melting Completion (Liquidus), °C 870
290
Melting Onset (Solidus), °C 830
230
Specific Heat Capacity, J/kg-K 390
140
Thermal Conductivity, W/m-K 95
31
Thermal Expansion, µm/m-K 20
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 25
7.4

Otherwise Unclassified Properties

Base Metal Price, % relative 23
80
Density, g/cm3 8.0
11
Embodied Carbon, kg CO2/kg material 2.7
5.6
Embodied Energy, MJ/kg 46
93
Embodied Water, L/kg 320
580

Common Calculations

Stiffness to Weight: Axial, points 7.4
1.1
Stiffness to Weight: Bending, points 20
8.6
Strength to Weight: Axial, points 17
0.84
Strength to Weight: Bending, points 17
2.1
Thermal Diffusivity, mm2/s 30
20
Thermal Shock Resistance, points 16
3.9

Alloy Composition

Aluminum (Al), % 0 to 0.25
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 58 to 63
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.5
0 to 0.020
Lead (Pb), % 0.4 to 3.0
83.4 to 85.5
Manganese (Mn), % 2.0 to 3.5
0
Nickel (Ni), % 0 to 0.25
0 to 0.010
Silicon (Si), % 0.5 to 1.5
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0 to 0.3
14.5 to 15.5
Zinc (Zn), % 27.2 to 39.1
0 to 0.0010
Residuals, % 0 to 0.5
0