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Solder Alloy 703 vs. C94400 Bronze

Solder alloy 703 belongs to the otherwise unclassified metals classification, while C94400 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 703 and the bottom bar is C94400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 15
55
Elastic (Young's, Tensile) Modulus, GPa 51
100
Elongation at Break, % 35
18
Poisson's Ratio 0.36
0.35
Shear Modulus, GPa 19
37
Tensile Strength: Ultimate (UTS), MPa 57
220

Thermal Properties

Latent Heat of Fusion, J/g 61
180
Melting Completion (Liquidus), °C 220
940
Melting Onset (Solidus), °C 220
790
Specific Heat Capacity, J/kg-K 220
350
Thermal Conductivity, W/m-K 55
52
Thermal Expansion, µm/m-K 22
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
10
Electrical Conductivity: Equal Weight (Specific), % IACS 17
9.9

Otherwise Unclassified Properties

Density, g/cm3 7.4
9.1
Embodied Carbon, kg CO2/kg material 18
3.4
Embodied Energy, MJ/kg 300
54

Common Calculations

Stiffness to Weight: Axial, points 3.8
6.1
Stiffness to Weight: Bending, points 17
17
Strength to Weight: Axial, points 2.1
6.8
Strength to Weight: Bending, points 4.4
9.0
Thermal Diffusivity, mm2/s 33
17
Thermal Shock Resistance, points 3.7
8.3

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
76.1 to 84
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
9.0 to 12
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), % 3.3 to 3.7
0
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 95.8 to 96.7
7.0 to 9.0
Zinc (Zn), % 0 to 0.0010
0 to 0.8