- E: This signifies that the electrode is suitable for arc welding.
- 70: This denotes the minimum tensile strength of the weld metal in thousands of pounds per square inch (KSI). In this instance, the tensile strength is 70 KSI.
- 1: The flux and covering of this electrode produce welds with a flat or slightly convex bead profile.
- 6: The electrode produces a weld with a high degree if slag coverage. Slag is the nonmetallic material that forms on the surface of the welds as it cools, and it can be easily removed.