In what condition should electrodes designed with low hydrogen coverings be maintained before welding?

Electrodes designed with low hydrogen coverings are specifically formulated to minimize the introduction of hydrogen into the weld. If these electrodes come into contact with moisture, it can lead to hydrogen-induced cracking in the weld metal. This cracking occurs because the moisture can react with the welding arc, liberating hydrogen that can become trapped in the weld pool as it solidifies.

Therefore, maintaining low hydrogen electrodes free of moisture ensures their effectiveness and helps safeguard the integrity of the weld. Keeping them dry prevents the potential for hydrogen contamination, which is critical to achieving strong, sound welds, especially in high-strength materials.

While room temperature may also be acceptable for storage, it does not address the primary concern of moisture, making it less specific than the need to keep the electrodes free from moisture. Similarly, storing electrodes in a humid environment or under high pressure does not align with best practices for maintaining their performance and safety.