Solder Alloy 703 vs. C63020 Bronze
Solder alloy 703 belongs to the otherwise unclassified metals classification, while C63020 bronze belongs to the copper alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is solder alloy 703 and the bottom bar is C63020 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 51 | |
| 120 |
| Elongation at Break, % | 35 | |
| 6.8 |
| Poisson's Ratio | 0.36 | |
| 0.33 |
| Shear Modulus, GPa | 19 | |
| 44 |
| Tensile Strength: Ultimate (UTS), MPa | 57 | |
| 1020 |
Thermal Properties
| Latent Heat of Fusion, J/g | 61 | |
| 230 |
| Melting Completion (Liquidus), °C | 220 | |
| 1070 |
| Melting Onset (Solidus), °C | 220 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 220 | |
| 450 |
| Thermal Conductivity, W/m-K | 55 | |
| 40 |
| Thermal Expansion, µm/m-K | 22 | |
| 18 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.4 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 18 | |
| 3.6 |
| Embodied Energy, MJ/kg | 300 | |
| 58 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.8 | |
| 8.0 |
| Stiffness to Weight: Bending, points | 17 | |
| 20 |
| Strength to Weight: Axial, points | 2.1 | |
| 34 |
| Strength to Weight: Bending, points | 4.4 | |
| 27 |
| Thermal Diffusivity, mm2/s | 33 | |
| 11 |
| Thermal Shock Resistance, points | 3.7 | |
| 35 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0010 | |
| 10 to 11 |
| 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 |
| Chromium (Cr), % | 0 | |
| 0 to 0.050 |
| Cobalt (Co), % | 0 | |
| 0 to 0.2 |
| Copper (Cu), % | 0 to 0.050 | |
| 74.7 to 81.8 |
| Gold (Au), % | 0 to 0.050 | |
| 0 |
| Indium (In), % | 0 to 0.1 | |
| 0 |
| Iron (Fe), % | 0 to 0.020 | |
| 4.0 to 5.5 |
| Lead (Pb), % | 0 to 0.070 | |
| 0 to 0.030 |
| Manganese (Mn), % | 0 | |
| 0 to 1.5 |
| Nickel (Ni), % | 0 to 0.010 | |
| 4.2 to 6.0 |
| Silver (Ag), % | 3.3 to 3.7 | |
| 0 |
| Tin (Sn), % | 95.8 to 96.7 | |
| 0 to 0.25 |
| Zinc (Zn), % | 0 to 0.0010 | |
| 0 to 0.3 |
| Residuals, % | 0 | |
| 0 to 0.5 |