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C67400 Bronze vs. Solder Alloy 121

C67400 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 C67400 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, % 22 to 28
25
Poisson's Ratio 0.31
0.43
Shear Modulus, GPa 41
7.5
Tensile Strength: Ultimate (UTS), MPa 480 to 610
32

Thermal Properties

Latent Heat of Fusion, J/g 190
29
Melting Completion (Liquidus), °C 890
290
Melting Onset (Solidus), °C 870
230
Specific Heat Capacity, J/kg-K 400
140
Thermal Conductivity, W/m-K 100
31
Thermal Expansion, µm/m-K 21
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 26
7.4

Otherwise Unclassified Properties

Base Metal Price, % relative 23
80
Density, g/cm3 7.9
11
Embodied Carbon, kg CO2/kg material 2.8
5.6
Embodied Energy, MJ/kg 48
93
Embodied Water, L/kg 330
580

Common Calculations

Stiffness to Weight: Axial, points 7.5
1.1
Stiffness to Weight: Bending, points 20
8.6
Strength to Weight: Axial, points 17 to 22
0.84
Strength to Weight: Bending, points 17 to 20
2.1
Thermal Diffusivity, mm2/s 32
20
Thermal Shock Resistance, points 16 to 20
3.9

Alloy Composition

Aluminum (Al), % 0.5 to 2.0
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), % 57 to 60
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.35
0 to 0.020
Lead (Pb), % 0 to 0.5
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), % 31.1 to 40
0 to 0.0010
Residuals, % 0 to 0.5
0