____ is denser than air, so it effectively shields welds in deep grooves in the flat position.

Name: ____ is denser than air, so it effectively shields welds in deep grooves in the flat position.
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Question

Quizplus · Accepted Answer

Argon is denser than air, meaning it can effectively shield welds in deep grooves in the flat position. Nitrogen and helium are not as dense as air, and hydrogen has a tendency to react with oxygen in the air, leading to potential welding defects.

____ Is Denser Than Air, So It Effectively Shields Welds