Which weld process uses no consumables?

• A. MIG
• B. TIG
• C. Stick
• D. Flux-cored

Answer: (B)

In TIG welding, the distinguishing feature is a non-consumable electrode. The arc uses a tungsten electrode that does not melt into the weld, so the electrode itself isn’t consumed during the process. Shielding gas (like argon) protects the weld from contamination, and if filler metal is needed, it’s supplied separately as a filler rod rather than being drawn from the electrode. This combination sets TIG apart from other methods that rely on consumable materials, such as a wire that melts into the weld (MIG), a coated electrode that fuses into the weld (stick), or flux-core wire used with a consumable core. So TIG is the process that uses no consumables in terms of electrode material, which is why it’s the correct choice.