GTAW is suitable for welding which of the following?

• A. Only copper
• B. Only aluminum
• C. Only steel
• D. A wide range of metals and alloys

Answer: (D)

Gas Tungsten Arc Welding (GTAW) is highly versatile because the arc is shielded and the tungsten electrode is nonconsumable, giving you precise heat control and clean, high-quality welds across many metals. It works with both ferrous and nonferrous materials, including steels, stainless steels, aluminum, magnesium, copper and its alloys, nickel, titanium, and many exotic metals. The ability to use AC for aluminum and magnesium to break up oxide layers, and DC for steels and nickel alloys, lets you tailor the process to the material. Filler rod can be added as needed for strength and joint filling, and GTAW is especially valued for thin sections and critical joints where precision matters. For these reasons, it is suitable for welding a wide range of metals and alloys.