To achieve proper shielding gas coverage, the GTAW torch may be angled from what range?

• A. 15 to 30 degrees
• B. 45 to 60 degrees
• C. 0 to 15 degrees
• D. 30 to 45 degrees

Answer: (C)

Shielding gas coverage is about directing a protective envelope of gas over the weld pool so air doesn’t contaminate the molten metal. In GTAW, you want the torch held almost level with the work, with only a small forward tilt toward the joint. A range of zero to about fifteen degrees ensures the gas jet blankets the weld as you progress, keeping the shielding gas focused on the arc and pool.

If you tilt the torch more steeply, the gas stream tends to drift away from the weld area, creating gaps in shielding. That can lead to porosity or oxidation in the weld, especially as you move along the seam. So the best range for proper coverage is a minimal tilt, roughly 0 to 15 degrees.