6061 aluminum and 7075 aluminum are two common alloys used in various applications, such as aerospace, automotive, and construction. Both alloys have their own unique properties and advantages, making it difficult to determine which one is "better."

6061 aluminum is a relatively strong alloy that is easy to machine and form. It has good corrosion resistance and is often used in applications where durability is important, such as in automobiles and aircraft. It is also commonly used in the production of extrusions, forgings, and sheet metal.

7075 aluminum is an even stronger alloy that has excellent tensile strength and fatigue resistance. It is often used in high-stress applications, such as in the aerospace industry, where lightweight materials are essential for performance. It is also commonly used in the production of forgings, castings, and sheet metal.

The choice between 6061 and 7075 aluminum depends on the specific application and requirements of the project. In some cases, 6061 aluminum may be the better choice because of its ease of processing and durability. In other cases, 7075 aluminum may be preferred because of its superior strength and fatigue resistance.

In conclusion, it is not possible to say definitively that 6061 aluminum is "better" than 7075 aluminum. The choice between the two alloys should be made based on the specific needs and requirements of the application.