The chart below compares how resistance changes with cross-sectional area for copper and aluminum. By showing the electrical resistance of copper alongside aluminium electrical resistivity, it highlights why aluminum conductors typically require a larger cross section to achieve the same performance.
| Cross Sectional Area (mm²) | Copper Resistance (Ω/km) | Aluminum Resistance (Ω/km) |
|---|
MISUMI USA carries a wide range of industrial manufacturing components – including Control and Instrumentation Cables– for your next project or machine fix. If you have any questions about measurement or sizing for your AWG needs, feel free to connect with our product experts, and engineers. Also, if you are looking for more insights be sure to check out our other blog articles, including: AMP Table for AWG, AWG Size Chart, and more.
Author: Scott Bredemann | Updated: 1/26/2026
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The content on this webpage is for informational purposes only. MISUMI makes no guarantees, expressed or implied, regarding the accuracy, completeness, or validity of the information. Performance parameters, tolerances, designs, materials, or processes should not be assumed to reflect third-party suppliers’ or manufacturers’ deliverables within MISUMI’s network. Buyers are responsible for specifying their part requirements.