ER5183 is called Aluminum Welding Wire because it is specifically designed for welding aluminum and aluminum alloys. It is a type of welding wire that meets the specifications and standards defined by the American Welding Society (AWS) for aluminum welding filler metals.

ER5183 aluminum welding wire typically contains a high magnesium content, which helps to improve the strength, corrosion resistance, and weldability of the aluminum alloy being welded. The wire is commonly used in MIG (Metal Inert Gas) or TIG (Tungsten Inert Gas) welding processes to join aluminum components in various industries, including aerospace, automotive, marine, and construction.

The "ER" prefix in the AWS classification stands for "electrode" or "filler metal," indicating that it is a consumable material used to fill the joint between two metal pieces during welding. The "5183" designation specifies the chemical composition and mechanical properties of the wire, which are tailored for welding aluminum alloys.

In summary, ER5183 is called Aluminum Welding Wire because it is an aluminum-based welding wire that meets AWS specifications for welding aluminum alloys.