Tungsten Inert Gas (TIG) welding uses what as an electrode and what metals is it commonly used for joining?

Tungsten Inert Gas (TIG) welding uses what as an electrode and what metals is it commonly used for joining?

• A. Tungsten rod acts as an electrode; fed by the operator; used for joining aluminium and stainless steel
• B. Consumable wire electrode
• C. Carbon electrode
• D. Copper electrode

Answer: (A)

In TIG welding, the arc is formed with a non-consumable tungsten electrode. The tungsten rod stays in the torch and provides the arc, while the filler metal is fed separately by the operator as needed. This setup lets you deposit welds with very precise heat control, which is ideal for joining metals like aluminum and stainless steel that require clean, high-quality welds. The other electrode options describe consumable electrodes or materials not used for TIG, so they don’t fit the process.

In TIG welding, the arc is formed with a non-consumable tungsten electrode. The tungsten rod stays in the torch and provides the arc, while the filler metal is fed separately by the operator as needed. This setup lets you deposit welds with very precise heat control, which is ideal for joining metals like aluminum and stainless steel that require clean, high-quality welds. The other electrode options describe consumable electrodes or materials not used for TIG, so they don’t fit the process.