Question

Stainless steel is welded using

• A. Arc welding
• B. Oxy-acetylene flame
• C. Inert gas welding
• D. Oxy-hydrogen flame

Hint:

For welding stainless steel and non-ferrous metals, prefer TIG or MIG welding due to better shielding and precision.

Answer 1

The Correct Option is C

Inert gas welding, such as TIG (Tungsten Inert Gas) or MIG (Metal Inert Gas) welding, is ideally suited for stainless steel due to its ability to produce clean, high-quality welds without contamination. These processes use an inert shielding gas (like Argon or Helium) that protects the weld area from atmospheric gases such as oxygen and nitrogen, which can cause oxidation or porosity. Other methods like: - Arc welding can introduce impurities. - Oxy-acetylene and oxy-hydrogen flames are not preferred due to oxidation risks and lack of precise control over heat.