![]() In this case, it is 70,000 PSI.ġ: ‘1’ indicates that this wire can be used to weld in all positions. Let’s use E71T-1C/M as an example.Į: This signifies that the wire is a current-carrying electrode.ħ: This digit multiplied by 10,000 renders the overall tensile strength in the weld. On the side of a roll of welding wire, there is also a code specific to Flux-cored welding. Flux-cored arc welding (FCAW) is a semi-automatic welding process that uses a wire feeder. Though there are numbers on a welding rod, stick electrodes are not the only type of electrode that has a number classification system. Source: Image Credit: Photo Win1, Shutterstock FCAW Electrodes Here is a detailed chart that will help you determine what kind of coating is indicated by the number, as well as the polarity to be used when welding: # The final number, ‘8’ in the case of our E7018 rod, requires more explanation. 2 means that the rod can only be used in the flat or horizontal position.Ĩ – the ‘8’ indicates that the rod has low hydrogen potassium with iron powder coating and that it can be used with all polarities (DC+, DC-, or AC). Let’s take the electrode E7018 as our point of departure in order to explain the numbering system.Į – This signifies that the rod is a current-carrying electrode.ħ0 – These two digits indicate that there 70,000 psi (pounds per square inch) of tensile strength in the weld.ġ – the ‘1’ indicates that it is an all-position rod. Image Credit: Matee Nuserm, Shutterstock What Do the Numbers on a Welding Rod Mean? SMAW Electrodes But what can the number tell us about the characteristics? Let’s take a look. As we can see, they all have slightly different traits ranging from arc characteristics to tensile strength, to the position it can be welded. ![]() These are just a few of the many welding rods. The high level of iron powder in the flux aids this process. Sometimes called “jet rod.” Produces a large puddle that cools slowly, hence it is only used in flat and horizontal positions. E7024 – A rod that can only be used in horizontal and flat positions.E7018 – all-position rod that is the preferred choice for Ironworkers and erectors due to its greater tensile strength and versatility.E6011 – all-position rod that is a preferred choice for maintenance work, or where metal is rusted and/or dirty.E6010 – an all-position rod especially used in pipe welding, known for its tight arc.Here are some of the most common welding rods. Through the use of a constant current from a welding power supply, the filler metal is melted and deposited into the base metal while the flux helps ensure the integrity of the weld. They are intended to be used for SMAW (Shielded Metal Arc Welding or Stick). Welding electrodes, more commonly called welding rods, are long pieces of filler metal covered in flux. But for welders of all levels, it is important to have at least a passing familiarity with the types of electrodes that you will be using. To the layman, it probably doesn’t make much sense. On the side of that electrode is something that looks like a code. It starts with the kind of electrode that you are using. ![]() When you’re holding that stinger and laying beads into a joint, aside from your overall welding skill and knowledge of the machine, there are factors that determine the quality of the weld. You are often not consciously thinking about the numbers on a welding rod while you are actually welding. 0 What Do the Numbers on a Welding Rod Mean? SMAW & FCAW
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