Some types of welding electrodes include: Low hydrogen electrodes Used for welding high-strength steels, these electrodes are less likely to crack due to hydrogen. Carbon electrodes Used for welding low-carbon and mild steel, these electrodes are suitable for structural steel, pipes, and pressure vessels. Cellulosic electrodes These electrodes have a high proportion of cellulose in the coating, which gives them a rapid burn-off rate and high welding speeds. Shielded metal arc welding electrodes Also known as stick electrodes, these electrodes are one of the oldest types of welding processes and are still popular today. Other types of welding electrodes include: Light coated electrodes, Consumable electrodes, Tungsten electrodes, and Alternating current arc welding electrodes.