Welding Rod Nomenclature. In this designation system the first two or three digits indicate the tensile strength of the welded material which is measured in kpi or kilo-pounds per square inch. There are two standard rods used in TIG although others are available.
What Is A Welding Rod. Stick electrodes melts along with the workpiece acting as filler. The classification system works like this.
The arrow is attached to a leader line that intersects with a horizontal reference line.
For example E6010 is a 60000 psi tensile strength electrode while E10018 designates a 100000 psi tensile strength electrode. The tail is optional and needed only for special. Finally theres a tail at the opposite end of the reference line that forks off in two directions. The welding symbol has an arrow which points to the location on the drawing where a weld is required.