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Dampness or moisture introduces ____ into the weld, which causes cracking when some metals are welded.
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Dampness or moisture introduces ____ into the weld, which causes cracking when some metals are welded.

User Manvinder
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Answer: Dampness or moisture introduces hydrogen into the weld, which causes cracking when some metals are welded.

Step-by-step explanation:

This moisture (hydrogen) is a major cause of weld cracking and porosity.

User Ben Marshall
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