Many countries have invented a system to name electrodes, some are based on international standards of ISO 2560, and some countries use their specific standard. Usually a figure is assigned to an electrode indicates the properties of the weld metal, type of cover and applied characteristics (type of current and the best welding position). Based on AWS standard, the name and the characteristics of the electrodes are characterized by series of numbers, for example, in E6010, E indicates that the electrode is used for electric welding. The second sign, 60, specified the minimum strength of the weld metal in terms of pounds per square inch, it should be multiplied by 1000, in other words, for the electrode 60000 psi, the next figure indicates the state or welding position for which an electrode is designed. (In this electrode, figure1 means it can be used in all welding positions) fourth sign specified the type of coverage and the current. Signs of detecting the electrodes in the Iranian National Standard (871) are in accordance with the international standards ISO 2560. British Standard (BS 639) is also based on this international standard.
