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Solder Alloy 704 vs. C94800 Bronze

Solder alloy 704 belongs to the otherwise unclassified metals classification, while C94800 bronze belongs to the copper alloys. 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 704 and the bottom bar is C94800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
110
Elongation at Break, % 30
22
Poisson's Ratio 0.36
0.34
Shear Modulus, GPa 19
43
Tensile Strength: Ultimate (UTS), MPa 55
310

Thermal Properties

Latent Heat of Fusion, J/g 62
200
Melting Completion (Liquidus), °C 240
1030
Melting Onset (Solidus), °C 220
900
Specific Heat Capacity, J/kg-K 220
380
Thermal Conductivity, W/m-K 50
39
Thermal Expansion, µm/m-K 22
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
12
Electrical Conductivity: Equal Weight (Specific), % IACS 15
12

Otherwise Unclassified Properties

Density, g/cm3 7.5
8.8
Embodied Carbon, kg CO2/kg material 19
3.5
Embodied Energy, MJ/kg 320
56

Common Calculations

Stiffness to Weight: Axial, points 3.8
7.2
Stiffness to Weight: Bending, points 17
18
Strength to Weight: Axial, points 2.1
9.8
Strength to Weight: Bending, points 4.3
12
Thermal Diffusivity, mm2/s 30
12
Thermal Shock Resistance, points 3.5
11

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0050
Antimony (Sb), % 0 to 0.1
0 to 0.15
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
84 to 89
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), % 0 to 0.070
0.3 to 1.0
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0 to 0.010
4.5 to 6.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0
0 to 0.0050
Silver (Ag), % 4.8 to 5.2
0
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 94.3 to 95.2
4.5 to 6.0
Zinc (Zn), % 0 to 0.0010
1.0 to 2.5
Residuals, % 0
0 to 1.3