What type of welding can use both AC and DC current to weld materials such as Aluminium and Stainless Steel?

Tungsten Arc Gas Shielded Welding, commonly known as TIG (Tungsten Inert Gas) welding, is a versatile welding process that can utilize both alternating current (AC) and direct current (DC). This capability makes it particularly effective for welding different types of materials, including aluminum and stainless steel.

The use of AC is significant when welding aluminum, as it helps to clean the oxide layer that forms on the surface of the aluminum, enhancing the quality of the weld. On the other hand, DC is often used for welding stainless steel, providing better control and a cleaner weld. The ability to switch between AC and DC allows the welder to choose the optimal settings for the material being welded, making TIG welding a valuable skill in various applications.

In contrast, other welding methods, such as Metal Arc Gas Shielded Welding and Submerged Arc Welding, either do not typically use both types of currents or are specialized for specific materials and applications that do not require this versatility. This makes Tungsten Arc Gas Shielded Welding the correct choice for its adaptability in welding various materials with both AC and DC.