What types of metals can be welded using GTAW?

The choice indicating that stainless steel, aluminum, and other non-ferrous metals can be welded using GTAW (Gas Tungsten Arc Welding) is correct because GTAW is particularly well-suited for these materials due to its precise control and ability to create high-quality welds. GTAW is known for producing clean, strong welds and is often utilized for thin sections of metal, where the risk of burn-through is higher.

Stainless steel exhibits excellent corrosion resistance, and GTAW allows for a controlled heat input, which is critical when welding this material to prevent distortion and to maintain its properties. Aluminum, being a non-ferrous metal, also requires careful handling to avoid issues like porosity, and GTAW’s inert gas shielding effectively protects the weld pool from contamination.

This welding process is not exclusively for ferrous materials, as indicated by the other options. Although carbon steel can be welded using GTAW, it is more commonly welded with other processes such as MIG or stick welding for efficiency. Cast iron can also be welded, but it poses specific challenges due to its brittleness and requires different techniques and filler materials. Therefore, the capability of GTAW aligns best with the welding of stainless steel, aluminum, and a range of other non-ferrous