Weldability refers to the ease with which a metal can be welded and yield a high-quality joint. Due to the unique physical and chemical properties of aluminum and aluminum alloys, their welding involves specific challenges.

The properties of aluminum and aluminum alloys are determined by their composition and microstructure, which directly influence the selection of processing (especially welding) processes and the adaptation to application scenarios.

Detailed Introduction to the Eight Series of Aluminum Alloys. Aluminum, as a lightweight metal material widely used in modern industry, has its model classification closely based on differences in alloy composition and the needs of practical application scenarios