Which statement best describes why moisture-sensitive electrodes require proper storage?

Which statement best describes why moisture-sensitive electrodes require proper storage?

• A. Moisture degrades arc stability and can cause hydrogen cracking; keep electrodes dry.
• B. Moisture causes corrosion of electrodes; reduces flux.
• C. It helps extend shelf life only.
• D. It prevents rust on storage container.

Answer: (A)

Moisture absorption in these electrodes leads to hydrogen being released into the weld when you strike an arc. That hydrogen can cause porosity and hydrogen-induced cracking, especially with low-hydrogen/high-strength welds. Keeping electrodes dry prevents that hydrogen from forming, which is why proper storage is essential for reliable arc stability and sound welds. The other ideas miss the main danger: moisture isn’t primarily about corrosion, shelf life, or rust on the container. It’s about hydrogen-related defects in the weld.

Moisture absorption in these electrodes leads to hydrogen being released into the weld when you strike an arc. That hydrogen can cause porosity and hydrogen-induced cracking, especially with low-hydrogen/high-strength welds. Keeping electrodes dry prevents that hydrogen from forming, which is why proper storage is essential for reliable arc stability and sound welds. The other ideas miss the main danger: moisture isn’t primarily about corrosion, shelf life, or rust on the container. It’s about hydrogen-related defects in the weld.