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Solder Alloy 704 vs. CC331G Bronze

Solder alloy 704 belongs to the otherwise unclassified metals classification, while CC331G bronze belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is solder alloy 704 and the bottom bar is CC331G bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 14
140
Elastic (Young's, Tensile) Modulus, GPa 51
110
Elongation at Break, % 30
20
Poisson's Ratio 0.36
0.34
Shear Modulus, GPa 19
43
Tensile Strength: Ultimate (UTS), MPa 55
620

Thermal Properties

Latent Heat of Fusion, J/g 62
230
Melting Completion (Liquidus), °C 240
1060
Melting Onset (Solidus), °C 220
1000
Specific Heat Capacity, J/kg-K 220
440
Thermal Conductivity, W/m-K 50
61
Thermal Expansion, µm/m-K 22
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
13
Electrical Conductivity: Equal Weight (Specific), % IACS 15
14

Otherwise Unclassified Properties

Density, g/cm3 7.5
8.3
Embodied Carbon, kg CO2/kg material 19
3.2
Embodied Energy, MJ/kg 320
53

Common Calculations

Stiffness to Weight: Axial, points 3.8
7.6
Stiffness to Weight: Bending, points 17
19
Strength to Weight: Axial, points 2.1
21
Strength to Weight: Bending, points 4.3
19
Thermal Diffusivity, mm2/s 30
17
Thermal Shock Resistance, points 3.5
22

Alloy Composition

Aluminum (Al), % 0 to 0.0010
8.5 to 10.5
Antimony (Sb), % 0 to 0.1
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 0.050
83 to 86.5
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
1.5 to 3.5
Lead (Pb), % 0 to 0.070
0 to 0.1
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.010
0 to 1.5
Silicon (Si), % 0
0 to 0.2
Silver (Ag), % 4.8 to 5.2
0
Tin (Sn), % 94.3 to 95.2
0 to 0.2
Zinc (Zn), % 0 to 0.0010
0 to 0.5