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Solder Alloy 704 vs. C94500 Bronze

Solder alloy 704 belongs to the otherwise unclassified metals classification, while C94500 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 C94500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 14
50
Elastic (Young's, Tensile) Modulus, GPa 51
92
Elongation at Break, % 30
12
Poisson's Ratio 0.36
0.36
Shear Modulus, GPa 19
34
Tensile Strength: Ultimate (UTS), MPa 55
170

Thermal Properties

Latent Heat of Fusion, J/g 62
160
Melting Completion (Liquidus), °C 240
940
Melting Onset (Solidus), °C 220
800
Specific Heat Capacity, J/kg-K 220
330
Thermal Conductivity, W/m-K 50
52
Thermal Expansion, µm/m-K 22
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
10
Electrical Conductivity: Equal Weight (Specific), % IACS 15
9.7

Otherwise Unclassified Properties

Density, g/cm3 7.5
9.3
Embodied Carbon, kg CO2/kg material 19
3.2
Embodied Energy, MJ/kg 320
51

Common Calculations

Stiffness to Weight: Axial, points 3.8
5.5
Stiffness to Weight: Bending, points 17
16
Strength to Weight: Axial, points 2.1
5.2
Strength to Weight: Bending, points 4.3
7.4
Thermal Diffusivity, mm2/s 30
17
Thermal Shock Resistance, points 3.5
6.7

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0050
Antimony (Sb), % 0 to 0.1
0 to 0.8
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
66.7 to 78
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.15
Lead (Pb), % 0 to 0.070
16 to 22
Nickel (Ni), % 0 to 0.010
0 to 1.0
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 0.080
Tin (Sn), % 94.3 to 95.2
6.0 to 8.0
Zinc (Zn), % 0 to 0.0010
0 to 1.2