A form of welding filler metal, normally packaged as coils or spools, that may or may not conduct electrical current depending upon the welding process used.

An assembly whose component parts are joined by welding.

A controlled electrical discharge between the electrode and the workpiece that is formed and sustained by the establishment of a gaseous conductive medium, called an arc plasma.

The metal or alloy to be added in making a weld joint that alloys with the base metal to form weld metal in a fusion welded joint.

The work piece lead and electrode lead of an arc welding circuit.