What shielding gas are flammable?

Prepare for the California Welding Contractor Exam (C-60 License) with flashcards and multiple choice questions, each including hints and explanations. Get exam-ready!

Multiple Choice

What shielding gas are flammable?

Explanation:
Shielding gas flammability matters because it affects fire risk around the weld. Argon and helium are inert and do not burn, and carbon dioxide isn’t a fuel either. Hydrogen, however, is highly flammable and can ignite in air, which is why using hydrogen-containing shielding gas introduces a fire/explosion risk. In short, hydrogen is the shielding gas among these options that is flammable.

Shielding gas flammability matters because it affects fire risk around the weld. Argon and helium are inert and do not burn, and carbon dioxide isn’t a fuel either. Hydrogen, however, is highly flammable and can ignite in air, which is why using hydrogen-containing shielding gas introduces a fire/explosion risk. In short, hydrogen is the shielding gas among these options that is flammable.

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