At what temperature should low-hydrogen SMAW electrodes be stored?

Low-hydrogen SMAW (Shielded Metal Arc Welding) electrodes are critical in minimizing the risk of hydrogen-induced cracking in welded joints. To maintain their effectiveness, it is essential to store them at specific temperatures that prevent moisture absorption, which can lead to increased hydrogen levels in the weld.

Storing these electrodes at 120° C (250° F) is optimal because it sufficiently reduces moisture content while avoiding damage to the electrodes themselves. This temperature helps to keep the coating on the electrodes stable and ensures that they maintain their low-hydrogen properties. If electrodes are stored at temperatures too low, they can absorb moisture and become less effective during the welding process.

Furthermore, temperatures that are too high can potentially damage the electrodes by degrading the materials, which could compromise the quality of the weld. Thus, 120° C is a balanced approach that preserves the structural integrity of the electrodes while preventing moisture contamination.