Low Hydrogen Welding Electrode

Low hydrogen electrodes offer fast-fill (high-deposition) or fill-freeze (out-of-position) characteristics and are designed to produce sound welds of X-ray quality with excellent notch/impact properties and high ductility.
Some low hydrogen stick electrodes have a -1 suffix in the AWS classification. This suffix indicates that the stick electrode meets the requirements for improved toughness.
Low hydrogen electrodes, incidentally, are the most widely used class of welding consumables for such applications as power generation, general fabrication, shipbuilding, hard-to-weld, out-of-position and pipeline welding.
Welding consumables can be classified with an optional diffusible hydrogen designator. These designators include an H4, H8 and H16 designation. The “H” and corresponding number indicates milliliters of diffusible hydrogen per 100 grams of weld metal. For example, a designation of H4 indicates 4mL of diffusible hydrogen per 100 grams of weld deposit.