{"id":14572,"date":"2025-03-25T14:47:07","date_gmt":"2025-03-25T19:47:07","guid":{"rendered":"https:\/\/blog.misumiusa.com\/?page_id=14572"},"modified":"2025-03-25T14:52:17","modified_gmt":"2025-03-25T19:52:17","slug":"can-aluminum-conduct-electricity","status":"publish","type":"page","link":"https:\/\/us.misumi-ec.com\/blog\/can-aluminum-conduct-electricity\/","title":{"rendered":"Can Aluminum Conduct Electricity?"},"content":{"rendered":"\n

Author: Scott Bredemann<\/a><\/p>\n\n\n\n

Updated<\/strong>: 03\/25\/2025 | Read Time<\/strong>: 4mins<\/p>\n\n\n\n

When most people think of metals and electrical conductivity they immediately think of copper – but, what about aluminum? As a lightweight and widely available metal, aluminum is used in many industrial and electrical applications\u2014but is it a good conductor of electricity?<\/p>\n\n\n\n

The short answer is yes, aluminum does conduct electricity, but not as efficiently as copper. However, its lower cost and lighter weight make it a popular alternative in certain applications, such as power transmission lines and automotive wiring. In this article, we\u2019ll explore how aluminum conducts electricity, how it compares to copper, and where it\u2019s most commonly used.<\/p>\n\n\n\n

Is Aluminum a Good Conductor of Electricity?<\/strong><\/h2>\n\n\n\n

Aluminum <\/a>does conduct electricity, but not as well as copper<\/a>. Like all metals, aluminum allows electricity to flow because it has free electrons that move easily. However, it has a higher electrical resistance than copper, meaning it\u2019s not quite as efficient at carrying current.<\/p>\n\n\n\n

To put it in perspective, aluminum has about 61% of the conductivity of copper. That means an aluminum wire needs to be thicker than a copper wire to carry the same amount of electricity. Even so, aluminum is widely used in electrical applications because it\u2019s lighter, more affordable, and naturally resistant to corrosion.<\/p>\n\n\n\n

Below is a comparison of different metals based on their electrical conductivity, using copper as the reference (100% IACS, International Annealed Copper Standard):<\/p>\n\n\n\n

Metal<\/strong><\/td>Electrical Conductivity (% IACS)<\/strong><\/td>Resistivity (\u03a9\u00b7m \u00d7 10\u2078)<\/strong><\/td><\/tr>
Copper<\/td>100%<\/td>1.68<\/td><\/tr>
Gold<\/td>70%<\/td>2.44<\/td><\/tr>
Aluminum<\/td>61%<\/td>2.82<\/td><\/tr>
Brass<\/td>28%\u201337%<\/td>6.98\u20134.87<\/td><\/tr>
Nickel<\/td>22%<\/td>7.14<\/td><\/tr>
Iron<\/td>17%<\/td>9.71<\/td><\/tr>
Tin<\/td>15%<\/td>11.5<\/td><\/tr>
Lead<\/td>7%<\/td>22<\/td><\/tr>
Titanium<\/td>3%<\/td>42<\/td><\/tr><\/tbody><\/table>
Table of Metal by Conductivity<\/figcaption><\/figure>\n\n\n\n

Advantages and Disadvantages of Using Aluminum For Conductivity<\/h2>\n\n\n\n

Advantages:<\/strong><\/p>\n\n\n\n