Welding rod charts describe the electrode type, size, current rating and current type of a series of welding rods. The charts are used by welding technicians to assist in proper rod selection based on the application and welder type.
Welding rod charts are selected based on the material being welded. Once the applicable chart is located, a technician selects an electrode based on the voltage, current and power settings of the welder. The proper welding rod diameter is then selected based on the type of joint and metal thickness. Some welding rod charts include additional information such as coating, penetration, tensile strength and position.