GTAW-P welding can weld which of the following?

• A. Almost any metal
• B. Only steel
• C. Only aluminum
• D. Only copper

Answer: (A)

GTAW-P welding uses a plasma arc that concentrates heat for highly controlled, high-energy welding, which gives it broad versatility across different metals. With the right filler metal, shielding gas, and carefully chosen heat input, it can join ferrous and nonferrous metals—steel, aluminum, stainless steel, titanium, copper alloys, magnesium, nickel alloys, and more. That ability to adapt to varying melting points, thermal conductivities, and oxide surfaces is what makes it capable of welding almost any metal. The other options imply a restriction to a single metal type, which doesn’t reflect the process’s wide applicability.