Copper is more widely used than aluminum. While both metals have significant applications, copper's versatility and conductivity make it the more prevalent choice across various industries.

Copper's extensive use can be attributed to its exceptional electrical and thermal conductivity, corrosion resistance, and malleability. These properties make it ideal for electrical wiring, plumbing, and various industrial applications. According to the Copper Development Association, copper is used in approximately 90% of all electrical wiring and cabling. This dominance in the electrical sector alone accounts for a substantial portion of copper's overall usage.

Aluminum, on the other hand, is widely used in the construction industry, transportation, and packaging. Its lightweight nature and relatively low cost make it a popular choice for these applications. However, aluminum's conductivity is approximately one-third that of copper, limiting its use in high-current applications. Additionally, aluminum is more susceptible to corrosion compared to copper, which can affect its longevity in certain environments.

Data from the U.S. Geological Survey (USGS) further supports copper's wider usage. In 2020, the U.S. consumed approximately 3.3 million metric tons of copper, compared to 1.9 million metric tons of aluminum. This consumption gap highlights the greater demand for copper across various sectors.

In summary, copper's superior properties and widespread applications in the electrical and plumbing industries make it the more widely used metal compared to aluminum.