Electrode Wire, ER70S-3 or ER70S-6 06-07-2006, 01:08 PM. A number 1 in the next to the last digit of the electrode classification for SMAW electrodes, indicates that an electrode can be used in the flat position and on horizontal flat welds only. As it melts, the central electrode acts as the filler material to create the new, seamless solid mass. AWS A5.18 and ASME SFA5.18 electrodes are used for GMAW and GTAW when bare solid electrode/rod is used. ER70S-3 and ER70S-6 are the most widely used. c) poor shielding. As such, it is a consumable material. Measured in thousands of pounds per square inch. E7018-X E Indicates that this is an electrode 70 Indicates how strong this electrode is when welded. The commonly recommended electrode is S-6 by most car companies. For carbon steel electrodes, the electrode classification dictates the silicon level. I will explain the meaning of these symbols: FOR CARBON STEEL OR MILD STEEL (SUCH AS ER70S-6 OR ER70S-3) These electrodes are characterized by a smooth, quiet arc, very low spatter, and low arc penetration. E, eletric welding. 18. S, solid wire. b) undercutting. What would the reasoning be for specifying ER70S-3 wire over using ER70S-6? The electrode and metal object melt and form a solid on cooling. Single values indicate maximum. 70, tensile strength. 16. The electrode classification that indicates a deep penetrating electrode that can be used with alternating current (AC) current is ... ER70S-3: Term. Solid Electrodes ER70S-2 ER70S-3 ER70S-4 ER70S-6 ER70S-7 ER70S-G ER48S-2 ER48S-3 ER48S-4 ER48S-6 ER48S-7 ER48S-G Required ... third shall not be lower than 70 ft∙lbf [95 J]. GMAW (MIG welding) electrodes are designated by some letters and numbers such as ER70S-6, ER90S-6 and E308L etc. What does the 70 indicate in the electrode classification ER70S-3? Electrodes of this classification can be operated on AC or DCEN. ... What does the 70 indicate in the electrode classification ER70S-3: Definition. False A number 2 in the next to last digit of the electrode classification on an SMAW electrode, indicates the electrode may be used in all welding positions. Excessive amounts of weld spatter in the nozzle may cause a) lack of fusion. Repairs to the frames on Dodge trucks specify S-3 and note not to substitute. They can be used with high travel speeds. a) Trade name b) Tensile Strength c) Yield Strength d) Hardness 17. ** All G Classifications have the same chemical minimum requirements. GMAW 4.1.5.3..... may be made using an E-70S-x electrode. ER70S-3 C0 2 70 (500) 60 (420) 22 20 at 0 (27 at -18) .06-.15 .90-1.40 .45-.70 .025 .035 — — — .50 — ... * Amount depends on electrode classification. For pipe applications, ER70S-2, ER70S-4, and ER70S-7 are sometimes used for open-root work because they offer lower silicon levels. R, rod or filler. They are commonly listed as ER70S-2, ER70S-3, etc. An old code book I have (90) indicates the following for filler metals SMAW 4.1.5.1 .....using an e70XX or e-70xx-x low hydrogen electrode. AWS A5.15 and ASME SFA 5.18 also include cored or composite electrodes used with the GMAW process. The number code of the electrode is known as its AWS, or American Welding Society, name. The digits all have a specific meaning. d) longitudinal cracks. 1 Indicates in what welding positions it can be used. The material specification for carbon steel SMAW electrodes actually lists certain electrodes as "Low Hydrogen". 6, chemical composition. Which of the following is considered an advantage of the GMAW process? These are solid bare wire electrodes for carbon and high strength low alloy steels. 8 Indicates the coating, penetration, and current type used. Tensile strength: