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Solder Alloy 704 vs. C93800 Bronze

Solder alloy 704 belongs to the otherwise unclassified metals classification, while C93800 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 C93800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
96
Elongation at Break, % 30
9.7
Poisson's Ratio 0.36
0.35
Shear Modulus, GPa 19
35
Tensile Strength: Ultimate (UTS), MPa 55
200

Thermal Properties

Latent Heat of Fusion, J/g 62
170
Melting Completion (Liquidus), °C 240
940
Melting Onset (Solidus), °C 220
850
Specific Heat Capacity, J/kg-K 220
340
Thermal Conductivity, W/m-K 50
52
Thermal Expansion, µm/m-K 22
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
11
Electrical Conductivity: Equal Weight (Specific), % IACS 15
11

Otherwise Unclassified Properties

Density, g/cm3 7.5
9.1
Embodied Carbon, kg CO2/kg material 19
3.2
Embodied Energy, MJ/kg 320
51

Common Calculations

Stiffness to Weight: Axial, points 3.8
5.9
Stiffness to Weight: Bending, points 17
17
Strength to Weight: Axial, points 2.1
6.1
Strength to Weight: Bending, points 4.3
8.4
Thermal Diffusivity, mm2/s 30
17
Thermal Shock Resistance, points 3.5
8.1

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
75 to 79
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
13 to 16
Nickel (Ni), % 0 to 0.010
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
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
6.3 to 7.5
Zinc (Zn), % 0 to 0.0010
0 to 0.8
Residuals, % 0
0 to 1.0