All Classification of Welding Electrodes The welding industry has adopted the welding rod classification number series decided by the American Welding Society (AWS). The identification system of the electrode for steel arc welding is adopted as follows. E- This E indicates electrode for arc welding The 1st two or three digits โ It indicates the tensile strength in thousands of pounds /square inch of deposited material once tried to pull apart. The 3rd or 4th digit โ It indicates the position of the weld. If 0 it shows no classification used, 1 is for every position, 2 for flat and horizontal, 3 is for flat position only. The 4th digit โ It indicates the type of coating and the type of electric power supply, AC/DC, straight or reverse polarity. The number E6010 โ Now it indicates an arc welding rod with a stress tensile strength of 60,000psi, can be used in all positions, and direct current with terse polarity. welding electrode classification Current, Polarity, and Coating Types designated by the 4th digit in electrode classification number Digit Coating Weld current 0 * * 1 Cellulose potassium ac, dcrp, dcsp 2 Titania sodium ac, dcsp 3 Titania potassium ac, dcsp, dcrp 4 Iron powder titania ac, dcsp, dcrp 5 Low hydrogen sodium dcrp 6 Low hydrogen potassium ac, dcrp 7 Iron powder Iron oxide ac, dcsp 8 Iron powder low hydrogen ac, dcrp, dcsp When we find the fourth or last digit as zero, the type of coating and current can be judged by the third digit only. ๐๐๐๐ซ ๐๐จ๐ฅ๐ฅ๐ข๐ง๐ ๐๐ก๐ฎ๐ญ๐ญ๐๐ซ ๐๐๐๐ซ - ๐๐จ๐ญ๐จ๐ซ ๐๐ก๐ฎ๐ญ๐ญ๐๐ซ ๐๐ ๐๐จ๐ฅ๐ฅ๐ง๐ ๐๐ก๐ฎ๐ญ๐ญ๐๐ซ ๐๐๐ง๐ฎ๐๐ฅ ๐๐จ๐ฅ๐ฅ๐ข๐ง๐ ๐๐ก๐ฎ๐ญ๐ญ๐๐ซ ๐
๐ข๐ซ๐ ๐๐จ๐ฅ๐ฅ๐ข๐ง๐ ๐๐ก๐ฎ๐ญ๐ญ๐๐ซ ๐๐ฎ๐ญ๐จ๐ฆ๐๐ญ๐ข๐ ๐๐จ๐ฅ๐ฅ๐ข๐ง๐ ๐๐ก๐ฎ๐ญ๐ญ๐๐ซ ๐๐ซ๐ข๐ฅ๐ฅ ๐๐จ๐ฅ๐ฅ๐ข๐ง๐ ๐๐ก๐ฎ๐ญ๐ญ๐๐ซ