What do the last two digits of an electrode designation indicate?

The last two digits of an electrode designation provide important information regarding the polarity with which the electrode can be effectively used in welding, as well as any specific notes related to its performance or suitable applications. This classification system helps welders understand how to utilize the electrode properly for different types of welding processes and materials.

For instance, in many electrode designations, these last two digits might indicate whether the electrode is suitable for DC or AC current, which is essential for ensuring optimal welding performance. This aspect is crucial for professionals in the field, as using the wrong polarity can lead to poor weld quality or even equipment damage.

Understanding these details allows welders to select the right electrode for the job, matching it not only to the welding procedure but also to the materials being joined.